Recent Advances in Ultraviolet-Visible Spectrophotometry

Abstract Developments in UV/VIS spectrophotometry during the past decade are critically reviewed. Advances in instrumentation: sample handling, optical systems, detectors, and signal processing are discussed. The application of spectrophotometric detection in hydrodynamic systems is surveyed. Newer types of color systems employing macrocyclic compounds, porphyrines, surfactants, and basic dyes are evaluated. Separate sections are devoted to advances in spectrophotometric determination both of individual elements and organic compounds. Future trends in spectrophotometric analysis are discussed.

[1]  F. B. Reig,et al.  Spectrophotometric determination of fluoride in fluoride-bearing minerals after decomposition by fusion with sodium hydroxide. , 1985, Talanta.

[2]  C. S. Sastry,et al.  Spectrophotometric methods for the determination of some diuretics using 3-methyl-2-benzothiazolinone hydrazone. , 1988, The Analyst.

[3]  A. Fogg,et al.  Selective spectrophotometric determination of cephalosporins by alkaline degradation to hydrogen sulphide and formation of methylene blue , 1982 .

[4]  J. Aznárez,et al.  Extraction-spectrophotometric determination of germanium with phenylfluorone in N,N-dimethylformamide , 1985 .

[5]  D. Pérez-Bendito Approaches to differential reaction-rate methods. Plenary lecture , 1990 .

[6]  R. Kuroda,et al.  Application of anion-exchange techniques to the determination of traces of molybdenum in sea-water. , 1984, Talanta.

[7]  F. Ibrahim,et al.  Tetracyanoethylene in pharmaceutical analysis. Part I. A spectrophotometric method for the determination of some pharmaceutically important hydrazine and pyrazolone derivatives , 1986 .

[8]  Á. Ríos,et al.  Flow-injection configurations for chromium speciation with a single spectrophotometric detector , 1986 .

[9]  Yuroku Yamamoto,et al.  Spectrophotometric Determination of Antimony (III) By Solvent Extraction with Mandelic Acid and Malachite Green , 1983 .

[10]  Z. Marczenko,et al.  Flotation-spectrophotometric determination of osmium (ruthenium) with thiocyanate and Capri blue , 1981 .

[11]  Y. Fang,et al.  Determination of cyanide by an indirect spectrophotometric method using 5-Br-PADAP. , 1981, Talanta.

[12]  M. Valcárcel,et al.  Spectrophotometric determination of titanium, zirconium and hafnium with pyridoxal 3-hydroxy-2-naphthoylhydrazone , 1984 .

[13]  S. Igarashi,et al.  Porphyrin as a Reagent of New Indicator Reaction for the Catalytic Determination of Ultra Trace Amounts of Ruthenium(III) , 1987 .

[14]  G. Talsky,et al.  High-resolution/higher-order derivative spectrophotometry in microanalytical chemistry , 1981 .

[15]  Z. Marczenko,et al.  Extraction-spectrophotometric determination of vanadium with 3,5-dinitrocatechol and Brilliant Green. , 1988, Talanta.

[16]  Qiu Xing-chu,et al.  Spectrophotometric determination of exchangeable calcium in soils by chlorophosphonazo-mA , 1983 .

[17]  Tokuo Shimizu,et al.  Extractive Spectrophotometric Determination of Antimony(III), Bismuth, Indium, and Gallium with Pyrocatechol Violet and Tridodecylethylammonium Bromide , 1983 .

[18]  M. Eshwar,et al.  Rapid spectrophotometric determination of manganese(II) with 4-(2-thiazolylazo)-resorcinol , 1982 .

[19]  Z. Marczenko,et al.  Extraction of iridium with tetraphenylarsonium chloride and its flotation—spectrophotometric determination with rhodamine 6g , 1982 .

[20]  S. Motomizu,et al.  Solvent extraction of molybdophosphate with cationic dyes and spectrophotometric determination of micro amounts of phosphate in waters , 1982 .

[21]  K. Ueno,et al.  Complexation and extraction of alkali metal ions by 4'-picrylaminobenzo-18-crown-6 derivatives , 1980 .

[22]  Wolfhard Wegscheider,et al.  Selectivity in multicomponent analysis , 1986 .

[23]  Tokuo Shimizu,et al.  Extraction of Titanium(IV)–Pyrocatechol Violet Complex with Tridodecylethylammonium Bromide , 1982 .

[24]  K. Johnson,et al.  Determination of phosphate in seawater by flow injection analysis with injection of reagent , 1982 .

[25]  J. Veuthey,et al.  Spectrophotometric determination of ethanol in blood using a flow-injection system with an immobilized enzyme (alcohol dehydrogenase) reactor coupled to an on-line dialyser , 1990 .

[26]  A. Edwards,et al.  An improved, automated xylenol orange method for the colorimetric determination of aluminium. , 1983, Talanta.

[27]  H. Gunawardhana Extraction and spectrophotometric determination of titanium(IV) with N-phenyllaurohydroxamic acid and phenylflurone , 1983 .

[28]  Y. Katayama,et al.  Chelate and intramolecular ion-pair formation: A guiding concept for structure/selectivity relationships in the liquid-liquid extraction of alkali and alkaline earth metal ions by anionic crown ether derivatives , 1986 .

[29]  J. Bartrolí,et al.  Automated spectrophotometric determination of titanium(IV) in water and brines by flow injection based on its reaction with hydrogen peroxide , 1990 .

[30]  S. Motomizu,et al.  Extractive spectrophotometric determination of non-ionic surfactants in water. , 1982, Talanta.

[31]  A. Macdonald,et al.  Flow-injection spectrophotometric determination of aluminium based on chrome azurol S and cetylpyridinium chloride , 1988 .

[32]  H. Zhang-fa,et al.  Spectrophotometric determination of molybdenum in steels with o-nitrophenylfluorone and cetyltrimethylammonium bromide. , 1988, Talanta.

[33]  Joel M. Harris,et al.  Selection of analytical wavelengths for multicomponent spectrophotometric determinations , 1985 .

[34]  M. Zaki,et al.  Spectrophotometric determination of iron as phenylfluorone complex sensitized with Triton X-100 , 1989 .

[35]  D. Betteridge,et al.  Analytical Aspects of Photoacoustic Spectroscopy , 1984 .

[36]  H. Kawabe,et al.  Determination of Titanium(IV) with o-Hydroxyhydroquinonephthalein and Hydrogen Peroxide1 , 1985 .

[37]  D. Desilets,et al.  Quantitation and identification of polynuclear aromatic hydrocarbons by liquid chromatography and multiwavelength absorption spectrometry , 1984 .

[38]  B. Morelli 2-Thiobarbituric acid as a reagent for the determination of bismuth(III) by normal and derivative spectrophotometry , 1982 .

[39]  K. Yoshimura Application of ion-exchanger phase absorptiometry to flow analysis. Determination of trace amounts of chromium(VI) in water , 1988 .

[40]  V. Jain,et al.  Analytical applications of thiosemicarbazones and semicarbazones , 1988 .

[41]  V. I. Bogdanova The choice of optimal conditions for the determination of arsenic in form of molybdenum blue , 1984 .

[42]  Hidetoshi Suzuki,et al.  Spectrophotometric determination of boron in plants after separation as trimethyl borate by microdiffusion , 1985 .

[43]  芳一 藤田,et al.  メチルセルロース及び低濃度臭化セチルトリメチルアンモニウムの共存下,ο-ヒドロキシヒドロキノンフタレインを用いるパラジウム(II)の吸光光度定量 , 1979 .

[44]  S. Sato Extraction-spectrophotometric determination of boron and antimony in carbon and low-alloy steels with mandelic acid and malachite green. , 1985, Talanta.

[45]  B. Culik Microdiffusion and spectrophotometric determination of fluoride in biological samples , 1986 .

[46]  S. Motomizu,et al.  Determination of Potassium in River Water by Solvent Extraction- Flow Injection Analysis , 1986 .

[47]  T. Rao,et al.  Spectrophotometric determination of rhodium(III) in thermocouple wires using thiocyanate and rhodamine 6G , 1983 .

[48]  M. A. Pichaj,et al.  Amplification-spectrophotometric determination of arsenic , 1986 .

[49]  M. Tabata Kinetic method for the determination of nanogram amounts of lead(II) using its catalytic effect on the reaction of manganese(II) with 5,10,15,20-tetrakis(4-sulphonatophenyl)porphine. , 1987, The Analyst.

[50]  P. Levillain,et al.  Spectrophotométrie dérivée: intérêt, limites et applications , 1986 .

[51]  G. Parker,et al.  Spectrophtometric determination of tungsten(VI) with rutin and cetyltrimethylammonium bromide. , 1987, Talanta: The International Journal of Pure and Applied Analytical Chemistry.

[52]  M. Valcárcel,et al.  Simultaneous determination of organic isomers in mixtures by flow injection analysis with a diode array photodetector , 1987 .

[53]  L. G. Hargis,et al.  Ultraviolet and light absorption spectrometry. , 1978, Analytical chemistry.

[54]  Y. Miura,et al.  Spectrophotometric Determination of Micro Amounts of Thiocyanate via Permanganate Reaction , 1986 .

[55]  B. M. Cordero,et al.  Determination of uranium using a flow system with reagent injection. Application to the determination of uranium in ore leachates , 1990 .

[56]  B. Puri,et al.  Spectrophotometric determination of iron(II) by extraction of its ion associated complex with 3-(4-phenyl-2-pyridyl)-5,6-diphenyl-1,2,4-triazine and tetraphenylborate into molten naphthalene , 1984 .

[57]  J. Kalivas,et al.  Evaluation of experimental designs for multicomponent determinations by spectrophotometry , 1988 .

[58]  R. Cattrall,et al.  Flow-injection spectrophotometric determination of fluoride by using the zirconium/alizarin red S complex , 1988 .

[59]  M. Oshima,et al.  Spectrophotometric determination of phosphorus as orthophosphate based on solvent extraction of the ion associate of molybdophosphate with malachite green using flow injection , 1987 .

[60]  F. Belal Spectrophotometric determination of halogenated 8-hydroxyquinoline derivatives. , 1984, Talanta.

[61]  K. Kalinowski,et al.  Sensitive spectrophotometric determination of palladium with tin(II) chlorided and rhodamine-6g after flotation , 1986 .

[62]  M. Koupparis,et al.  Automated flow injection spectrophotometric determination of some phenothiazines using iron perchlorate: applications in drug assays, content uniformity and dissolution studies. , 1986, The Analyst.

[63]  S. Motomizu,et al.  Determination of trace amounts of phosphate in river water by flow-injection analysis. , 1983, Talanta.

[64]  K. Jones,et al.  Quantitation of urinary porphyrins by use of second-derivative spectroscopy. , 1979, Clinical chemistry.

[65]  J. A. Sweileh Determination of cyanide and thiocyanate by a spectrophotometric flow-injection method , 1989 .

[66]  G. Tölg,et al.  Nachweisstarke, hochselektive extraktions-spektral-photometrische Thalliumbestimmung mit Rhodamin B , 1982 .

[67]  G. Pacey,et al.  Alkali-metal ion complexation with lariat ethers possessing a chromogenic group. , 1984, Talanta.

[68]  Michael J. Sepaniak,et al.  Chemical Sensors Based on Immobilized Indicators and Fiber Optics , 1988 .

[69]  J. Dorsey,et al.  Micelles in Analytical Chemistry , 1990 .

[70]  J. Tsay,et al.  Use of chiral lanthanide shift reagents for the nuclear magnetic resonance spectrometric determination of amphetamine enantiomers , 1982 .

[71]  G. Castillo Determination of iron, copper and zinc in a single aliquot of serum sample using 4-[(5-bromo-2-pyridyl)azo]resorcinol ; Fluorometric cyclic assays for pyridine nucleotides which are reduced or oxidized in enzyme coupled assays. , 1988 .

[72]  W. V. D. Linden,et al.  MEMBRANE SEPARATION IN FLOW INJECTION ANALYSIS Gas Diffusion , 1983 .

[73]  Lumír Sommer,et al.  Analytical Absorption Spectrophotometry in the Visible and Ultraviolet: The Principles , 1990 .

[74]  F. S. Rojas,et al.  Selective determination of cobalt in a strongly acidic medium by flow injection analysis , 1991 .

[75]  A. Jensen,et al.  Differential kinetic analysis and flow injection analysis: Part 3. The (2.2.2) Cryptates of Magnesium, Calcium and Strontium , 1980 .

[76]  I. Kolthoff Application of macrocyclic compounds in chemical analysis , 1979 .

[77]  A. Issa,et al.  Use of p-chloranilic acid for the colorimetric determination of some antimalarials. , 1986, Talanta.

[78]  E. Welsch A rapid geochemical spectrophotometric determination of tungsten with dithiol. , 1983, Talanta.

[79]  A. Corsini,et al.  Spectrophotometric determination of carbon monoxide with ruthenium(II) octaethylporphyrin. , 1984, Talanta.

[80]  M. Furukawa Syntheses and spectrophotometric studies of 2-(2-thiazolylazo)- and 2-(2-benzothiazolylazo)-5-dimethylaminobenzoic acids as analytical reagents , 1982 .

[81]  N. Yordanov,et al.  Extraction of uranium(IV) from phosphoric acid solutions with 1-phenyl-3-methyl-4-benzoylpyrazolone-5 (PMBP). , 1982, Talanta.

[82]  F. Strelow,et al.  Accurate determination of trace amounts of thorium in silicate rocks by cation-exchange chromatography and spectrophotometry , 1982 .

[83]  F. Krug,et al.  A simple procedure for standard additions in flow injection analysis : Spectrophotometric Determination of Nitrate in Plant Extracts , 1983 .

[84]  Ramaier Narayanaswamy,et al.  Optical fibre sensors for chemical species , 1988 .

[85]  A Simple Purity Test of p-Aminosalicylic Acid, Advantageously Alternative to USP Method, by UV Spectrophotometry , 1989 .

[86]  M. M. Abdel-khalek,et al.  Spectrophotometric determination of certain cephalosporins with ninhydrin. , 1984, The Analyst.

[87]  F. Strelow Determination of traces of vanadium in molybdenum metal and compounds by ion exchange chromatography-spectrophotometry , 1987 .

[88]  G. Talsky,et al.  Feinauflösende UV/VIS‐Derivativspektrophotometrie höherer Ordnung , 1978 .

[89]  J. Janata,et al.  Combination of flow injection analysis and voltammetry , 1982 .

[90]  M. H. Córdoba,et al.  Determination of palladium with thiocyanate and rhodamine b by a solvent-extraction method. , 1986, Talanta.

[91]  Jiaomai Pan,et al.  Spectrophotometric and first-derivative spectrophotometric determination of cadmium witho-hydroxybenzenediazoaminoazobenzene (HDAA) , 1989 .

[92]  M. Oshima,et al.  Spectrophotometric Determination of Silicate in Water with Molybdate and Malachite Green , 1989 .

[93]  G. Guiochon,et al.  Bias and nonlinearity of ultraviolet calibration curves measured using diode-array detectors , 1989 .

[94]  H. Tomiyasu,et al.  Colorimetric determination of ozone in water based on reaction with bis(terpyridine)iron(II) , 1984 .

[95]  H. Ishii,et al.  Determination of micro amounts of samarium and europium by analogue derivative spectrophotometry , 1982 .

[96]  Pan Jiao-mai,et al.  Chlorophosphonazo-m-NO2, a new reagent for the spectrophotometric determination of cerium sub-group rare earth elements in the presence of yttrium sub-group elements , 1981 .

[97]  Eva A. Terpinski Spectrophotometric determination of sodium azide , 1985 .

[98]  H. Wada,et al.  Synthesis of 2-[2-(8-hydroxyquinolyl)azo]-1-naphthol and its use in the spectrophotometric determination of calcium in potable water , 1985 .

[99]  P. L. Searle The berthelot or indophenol reaction and its use in the analytical chemistry of nitrogen. A review , 1984 .

[100]  G. Rathaiah,et al.  Rapid spectrophotometric determination of zirconium with 2-(5-bromo-2-pyridylazo)-5-diethylaminophenol. , 1988, Talanta.

[101]  H. Chung-gin,et al.  Spectrophotometric determination of micro amounts of cadmium in waste water with cadion and triton X-100. , 1980, Talanta.

[102]  M. Koupparis,et al.  Automated flow injection spectrophotometric determination of zinc using zincon: applications to analysis of waters, alloys and insulin formulations. , 1986, The Analyst.

[103]  T. Katami,et al.  Extraction-spectrophotometric determination of iron with 2-[2-(3,5-dibromopyridyl)azo]-5-dimethylaminobenzoic acid , 1984 .

[104]  Hiroshi Nakamura,et al.  ANALYTICAL APPLICATION OF FUNCTIONALIZED CROWN ETHER - METAL COMPLEXES , 1986 .

[105]  P. Ramappa,et al.  Rapid spectrophotometric determination of saccharin in soft drinks and pharmaceuticals using Azure B as reagent. , 1983, The Analyst.

[106]  Elo Harald Hansen,et al.  Determination of creatinine in undiluted blood serum enzymatic flow injection analysis with optosensing , 1988 .

[107]  M. Sager Bestimmung von germanium in gesteinen und erzen durch destillation und spektralphotometrie , 1984 .

[108]  M. Valcárcel,et al.  Spectrofluorimetric and spectrophotometric determination of aluminium with the salicyloylhydrazones of pyridine-2-aldehyde and pyridoxal , 1983 .

[109]  C. Burgess,et al.  Practical Absorption Spectrometry , 1984, Techniques in Visible and Ultraviolet Spectrometry.

[110]  I. Němcová,et al.  Spectrophotometric study of the reaction of bismuth with bromopyrogallol red in the presence of tensides: The determination of bismuth and EDTA , 1984 .

[111]  N. Harvey,et al.  Micellar enhanced analytical fluorimetry , 1984 .

[112]  A. B. Bendtsen,et al.  Spectrophotometric flow injection determination of trace amounts of thiocyanate based on its reaction with 2-(5-bromo-2-pyridylazo)-5-diethylaminophenol and dichromate: assay of the thiocyanate level in saliva from smokers and non-smokers. , 1991, The Analyst.

[113]  Chong-Yu Zhang,et al.  Determination of trace manganese in high-purity titanium, silicon and mineral acids by a flow-injection method based on a catalytic reaction , 1989 .

[114]  Y. Fang,et al.  Sensitive spectrophotometric determination of nickel(II) with 2-(5-bromo-2-pyridylazo)-5-diethylaminophenol. , 1981, Talanta.

[115]  M. Jarosz,et al.  Study of the formation of vanadium(IV) complexes with some triphenylmethane reagents and cationic surfactants , 1984 .

[116]  T. O'Haver Potential clinical applications of derivative and wavelength-modulation spectrometry. , 1979, Clinical chemistry.

[117]  Miguel Valcárcel,et al.  Integration of separation and detection in continuous-flow systems , 1991 .

[118]  G. Tölg,et al.  A Survey of selenium in the environment and a critical review of its determination at trace levels , 1983 .

[119]  Brian G. Osborne Determination of potassium bromate in flour by flow injection analysis , 1987 .

[120]  H. Petrowitz,et al.  Photometrische Bestimmung aromatischer Kohlenwasserstoffe nach Reaktion mit Tetracyanoethylen , 1988 .

[121]  S. Abe,et al.  Simultaneous determination of trace iron(II) and iron(III) based on kinetic spectrophotometry of the iron(III)-pyrocatechol violet complex in a micellar medium , 1989 .

[122]  G. Choppin,et al.  Separation and Determination of Transplutonium Elements , 1985 .

[123]  S. Motomizu,et al.  Flow-injection determination of sodium and potassium by separationon a silica column and extraction-spectrophotometry with benzo-18-crown-6 and tetrabromophenolphthalein ethyl ester , 1988 .

[124]  G. Rathaiah,et al.  Rapid spectrophotometric determination of chromium(III) with 2-(5-bromo-2-pyridylazo)-5-diethylaminophenol in the presence of benzoate and sodium dodecyl sulphate , 1986 .

[125]  Shahid Abbas Abbasi Environmental Status of Bismuth and its Trace Analysis in Alloys Plant Tissues, Animal Tissues and Waters as Ternary Complex with N-p-Methoxyphenyl-2-Furylacrylohydroxamic Acid and a Pyridylazo Reagent , 1988 .

[126]  F. G. Sánchez,et al.  Spectrophotometric and second-derivative spectrophotometric determination of mercury in organomercurials by means of benzyl 2-pyridyl ketone 2-quinolylhydrazone. , 1986, Talanta.

[127]  Quantitative Derivativphotometrie an digitalisierten Spektren , 1983 .

[128]  Z. Marczenko,et al.  Spectrophotometric determination of titanium with Chrome Azurol S (or Eriochrome Cyanine R) in the presence of some cationic surfactants , 1982 .

[129]  G. Christian,et al.  Continuous flow solvent extraction system for the determination of trace amounts of uranium in nuclear waste reprocessing solutions , 1988 .

[130]  H. Wada,et al.  Preconcentration and determination of calcium and magnesium in brine with flow-injection systems , 1988 .

[131]  Z. Marczenko,et al.  Sensitive flotation-spectrophotometric determination of platinum based on systems with chlorostannate(II) and basic dyes , 1983 .

[132]  R. Kuroda,et al.  Determination of palladium, platinum and gold by first derivative spectrophotometry , 1990 .

[133]  J. Ruzicka,et al.  Flow-injection analysis of traces of lead and cadmium by solvent extraction with dithizone. , 1980, Talanta: The International Journal of Pure and Applied Analytical Chemistry.

[134]  M. Tabata,et al.  A Kinetic Method For The Determination Of A Nanogram Amount Of Mercury(ii) By Its Catalytic Effect On The Complex Formation Reaction Of Manganese(11) With α, β, γ δ-Tetraphenylporphinesulfonate , 1980 .

[135]  G. Font,et al.  Ultraviolet spectrophotometric determination of phenols in natural and waste waters with iodine monobromide. , 1987, The Analyst.

[136]  H. Tanaka,et al.  Extraction-spectrophotometric determination of germanium(IV) with mandelic acid and malachite green. , 1989, Talanta.

[137]  J. Pavón,et al.  Simultaneous determination of nickel, zinc and copper by second-derivative spectrophotometry using 1-(2-pyridylazo)-2-naphthol as reagent , 1989 .

[138]  C. Tran,et al.  Development of a double-beam, dual-wavelength thermal-lens spectrometer for simultaneous measurement of absorption at two different wavelengths , 1988 .

[139]  P. Viñas,et al.  Catalytic method for the determination of ruthenium in the presence of other noble metals , 1987 .

[140]  E. M. Donaldson Spectrophotometric determination of germanium in ores, concentrates, zinc-processing products and related materials with phenylfluorone and cetyltrimethylammonium bromide after separation by iron collection and heptane extraction of germanium tetrachloride. , 1984, Talanta.

[141]  M. Kamada,et al.  Differential determination of antimony(III) and antimony(V) by indirect spectrophotometry with chromium(VI) and diphenylcarbazide, after reduction of antimony(V) , 1987 .

[142]  K. Ueno,et al.  New convenient colorimetric determination of patassium in blood serum. , 1977, Talanta.

[143]  T. C. O'Haver,et al.  Numerical error analysis of derivative spectrometry for the quantitative analysis of mixtures , 1976 .

[144]  S. Kuś,et al.  Extractive separation and spectrophotometric determination of palladium and platinum with dithizone in the presence of stannous chloride. , 1984, Talanta.

[145]  Z. Marczenko,et al.  Flotation separation of tin(II) from tin(IV) matrix using Rhodamine 6G and diisopropyl ether , 1989 .

[146]  F. Mirzoyan,et al.  Sensitive spectrophotometric determination of germanium as methylene blue 12-molybdogermanate , 1981 .

[147]  Jayarama,et al.  Interaction of phenothiazines with nitroso-R salt and extractive spectrophotometric determination of phenothiazine drugs. , 1986, Talanta.

[148]  O. Roeyset Flow injection spectrophotometric determination of aluminum in natural water using Eriochrome Cyanine R and cationic surfactants , 1987 .

[149]  J. Pavón,et al.  Analytical properties of 2,2′-bis (di-2-pyridinyl-methylene)-thiocarbohydrazone , 1983 .

[150]  C. Tran,et al.  Dual-Wavelength Photothermal Refraction Spectrometry for Small-Volume Samples , 1989 .

[151]  M. Balcerzak STUDIES ON THE SEPARATION OF OSMIUM BY FLOTATION AND SPECTROPHOTOMETRIC DETERMINATION WITH CRYSTAL VIOLET AND MALACHITE GREEN , 1991 .

[152]  Hiroto Watanabe,et al.  Dual-wavelength spectrophotometric determination of copper in sea-water with α,β,γ,°-tetrakis(1-methylpyridinium-4-yl) porphine , 1981 .

[153]  Y. Talmi Spectrophotometry and Spectrofluorometry with the Self-Scanned Photodiode Array , 1982 .

[154]  T. Koh Analytical Chemistry of Polythionates and Thiosulfate A Review , 1990 .

[155]  G. Giraudi,et al.  Direct spectrophotometric determination of thiocyanate in serum and urine with a continuous-flow analyzer , 1981 .

[156]  H. Wada,et al.  Synthesis of o,o′-dihydroxyazo compounds and their application to the determination of magnesium and calcium by flow injection analysis , 1984 .

[157]  Y. Youxian Simultaneous spectrophotometric determination of calcium and magnesium with chlorphosphonazo-III by flow injection analysis , 1988 .

[158]  A. Townshend,et al.  Spectrophotometric flow-injection determination of nitrate based on reduction with titanium(III) chloride , 1986 .

[159]  K. Yoshimura,et al.  Ion-exchanger phase absorptiometry for trace analysis. , 1985, Talanta.

[160]  G. Ackermann,et al.  Spectrophotometric Methods for the Investigation of Metal Complex Formation , 1988 .

[161]  R. Kuroda,et al.  Flow-injection analysis of silicate rocks for total iron and aluminium. , 1982, Talanta.

[162]  V. Gupta,et al.  Spectrophotometric determination of hydrogen cyanide in air and biological fluids. , 1987, The Analyst.

[163]  K. Horikoshi,et al.  Colorimetric determination of .gamma.-cyclodextrin , 1984 .

[164]  M. Iwamoto,et al.  Extraction and spectrophotometric determination of molybdenum(VI) with Malachite Green and p-chloromandelic acid. , 1987, Talanta.

[165]  Z. Fang,et al.  Spectrophotometric determination of total cyanide in waste waters in a flow-injection system with gas-diffusion separation and preconcentration , 1987 .

[166]  L. Sommer,et al.  Spektralphotometrische Bestimmung von Kobalt mit 2-(5-Brom-2-pyridylazo)-5-Diethylaminophenol , 1981 .

[167]  Z. Čížek,et al.  Extraction-spectrophotometric determination of small amounts of boron in copper metal and copper-base alloys with methylene blue. , 1984, Talanta.

[168]  G. Ackermann,et al.  Photometrische Bestimmung von Arsen und Phosphor in hochreinen Chemikalien , 1986 .

[169]  S. Jaya,et al.  Spectrophotometric determination of ruthenium(III) by ternary complex formation , 1982 .

[170]  Barry T. Hart,et al.  Flow-injection technique for the determination of low levels of phosphorus in natural waters , 1990 .

[171]  C. Sánchez-Pedreño,et al.  Sensitive method for the spectrophotometric determination of boron in plants and waters using crystal violet , 1985 .

[172]  T. Yamane,et al.  Simultaneous determination of calcium and magnesium by using a flow-injection system with simultaneous injection of two sample plugs and a masking agent plug. , 1991, Talanta.

[173]  A. Jensen,et al.  Kinetic determination of magnesium and calcium by stopped-flow injection analysis , 1983 .

[174]  D. Burns,et al.  The spectrophotometric and spectrofluorimetric determination of perchlorate by extraction with amiloride hydrochloride , 1980 .

[175]  G. Pacey,et al.  The synthesis and analytical capabilities of chromogenic aza-12-crown-4 as a selective reagent for lithium ion , 1985 .

[176]  Minoru Okumura,et al.  A simple visual method for the determination of phosphorus in environmental waters , 1987 .

[177]  J. Frew,et al.  Spectrophotometric determination of hydrogen peroxide and organic hydropheroxides at low concentrations in aqueous solution , 1983 .

[178]  B. Karlberg,et al.  Extraction based on the flow-injection principle : Part I. Description of the Extraction System , 1978 .

[179]  Y Fang,et al.  Spectrophotometric determination of silver with cadion 2B and triton X-100. , 1983, Talanta.

[180]  J. B. Fox,et al.  The Determination of Nitrite: A Critical Review , 1985 .

[181]  M. Blanco,et al.  Flotation and spectrophotometric determination of silver with 4-(p-nitrophenylazo)-2-amino-3-pyridinol , 1986 .

[182]  S. Sato,et al.  Extraction and spectrophotometric determination of titanium(IV) with malachite green and p-chloromandelic acid, with application to mild steels. , 1986, Talanta.

[183]  M. Llobat-Estellés,et al.  Kinetic-catalytic determination of cobalt by oxidation of Pyrogallol Red by hydrogen peroxide , 1986 .

[184]  A. Sanz-Medel,et al.  Dye-surfactant interactions: a review. , 1986, Talanta.

[185]  P. Worsfold,et al.  Spectrophotometric flow injection procedure for the on-line monitoring of sulphite in high ionic strength brine , 1991 .

[186]  M. Drikas,et al.  Spectrophotometric method for the determination of total cyanide in wastewater samples. , 1988, The Analyst.

[187]  B. Puri,et al.  Solid-liquid separation after liquid-liquid extraction: spectrophotometric determination of iron(II) by extraction of its ternary complex with 2,2′-dipyridyl and tetraphenylborate into molten naphthalene , 1984 .

[188]  Z. Marczenko,et al.  Spectrophotometric determination of germanium based on its ternary complex with phenylfluorone and zephiramine , 1986 .

[189]  P. Yáñez‐Sedeño,et al.  Determination of pentachlorophenol by flow-injection analysis with spectrophotometric detection. , 1988, Talanta.

[190]  C. E. Efstathiou,et al.  Kinetic determination of iron(II) and of some α-hydroxyacids based on the accelerating action of iron(II) and hexacyanoferrate(II) on the α-hydroxyacid-periodate reactions , 1986 .

[191]  K. Nose,et al.  Flow injection spectrophotometric determination of boron with D-sorbitol using Methyl Orange as an indicator , 1991 .

[192]  K. Ueno,et al.  Photometric reagents for alkali metal ions, based on crown-ether complex formation--III. 4'-picrylaminobenzo-15-crown-5 derivatives. , 1979, Talanta.

[193]  A. A. Kheir,et al.  A Sensitive Spectrophotometric Method for the Determination of Progesterone, Testosterone Propionate and Nandrolone Phenylpropionate in Ampoules , 1985 .

[194]  Zu-Yue Chen,et al.  Spectrophotometric study of the reaction of zinc with cadion 2B in the presence of triton X-100 , 1987 .

[195]  D. Burns,et al.  The spectrophotometric determination of cobalt after extraction of tetramethylene-bis(triphenyl-phosphonium) tetrathiocyanatocobaltate(II) with microcrystalline benzophenone , 1986 .

[196]  G. Locascio,et al.  Ultraviolet–visible photodiode array spectrophotometer wavelength calibration method. A practical computer algorithm , 1991 .

[197]  P. Viñas,et al.  Determination of vanadium in petroleum products by a catalytic method , 1985 .

[198]  J. March,et al.  Determination of technetium by reduction of methylene blue with tin(II) , 1985 .

[199]  Henri. Rooze Kinetic-spectrophotometric determination of trace levels of iron , 1984 .

[200]  S. B. Jonnalagadda Catalytic determination of silver by means of the 1,2-diaminoethane—peroxodisulphate reaction , 1982 .

[201]  P. Viñas,et al.  Kinetic determination of traces of manganese in different materials by its catalytic effect on the methylene green-periodate reaction. , 1986, Talanta.

[202]  A. Joshi,et al.  Extraction and spectrophotometric determination of copper with 1-phenyl-3-thiobenzoyl thiocarbamide , 1980 .

[203]  A. Stoyanova,et al.  A New Catalytic Reaction for the Determination of Nanomolar Concentrations of Iron(III) , 1988 .

[204]  S. Agarwal,et al.  Spectrophotometric determination of atropine, pilocarpine and strychnine with chloranilic acid. , 1982, Talanta.

[205]  E. Zagatto,et al.  Determination of sucrose in sugar-cane juice and molasses by flow-injection spectrophotometry , 1988 .

[206]  R. Kuroda,et al.  First-derivative spectrometric analysis of mixtures of peroxo complexes of titanium, vanadium, and molybdenum for respective metals , 1987 .

[207]  M. Llobat-Estellés,et al.  Spectrophotometric determination of bromate by the oxidation of Pyrogallol Red , 1985 .

[208]  A. Magill,et al.  Spectrophotometric method for quantitation of peroxides in sorbitan monooleate and monostearate. , 1984, Journal of pharmaceutical sciences.

[209]  J. Leyva,et al.  A new spectrophotometric method for determining triglycerides in serum. , 1984, Clinica chimica acta; international journal of clinical chemistry.

[210]  D. Burns,et al.  Spectrophotometric determination of manganese(VII) after extraction with the ethylene-bis(triphenylphosphonium) cation , 1987 .

[211]  M. J. Navas,et al.  Analytical applications of quinoxalines , 1985 .

[212]  Z. Marczenko,et al.  Sensitive flotation-spectrophotometric determination of gold, based on the gold(I)-iodide-methylene blue system. , 1985, Talanta.

[213]  A. Sanz-Medel,et al.  The complexation of Cr(III) and Cr(VI) with flavones in micellar media and its use for the spectrophotometric determination of chromium. , 1989, Talanta.

[214]  S. Inoue,et al.  Extraction-spectrophotometric determination of vanadium with N-m-tolyl-N-phenylhydroxylamine and its application to coal and coal fly-ash. , 1986, Talanta.

[215]  S. Motomizu,et al.  Modified extraction procedure for the spectrophotometric determination of trace amounts of aluminium in sea water with pyrocatechol violet and removal of excess of reagent , 1980 .

[216]  Jc Deandrade,et al.  SPECTROPHOTOMETRIC DETERMINATION OF BORON IN PLANTS USING MONOSEGMENTED CONTINUOUS-FLOW ANALYSIS , 1988 .

[217]  S. M. Khopkar,et al.  Liquid/liquid extraction separation of hafnium with amberlite La-1 from zirconium and other elements in citric acid solutions , 1987 .

[218]  D. G. Themelis,et al.  Catalytic determination of nanogram amounts of iron(III) using its catalytic effect on the oxidation of chromotropic acid by hydrogen peroxide , 1987 .

[219]  K. Jakubec,et al.  Direct spectrophotometric determination of rare earths in organic extracts with chlorophosphonazo III , 1987 .

[220]  K. Chayama,et al.  Liquid-liquid extraction of univalent class b metal ions by the thiacrown compound 4'-picrylaminobenzo-1,4,8,11-tetra-thiacyclopentadec-13-ene. , 1985, Talanta.

[221]  M. Ichihashi,et al.  Spectrophotometric determination of trace boron in biological materials after alkali fusion decomposition. , 1984, Analytical chemistry.

[222]  W. Chen,et al.  Chlorophosphonazo-p-Cl, a new reagent for the spectrophotometric determination of scandium , 1985 .

[223]  John G. Dorsey,et al.  The Micelle-Analytical Chemistry Interface , 1984 .

[224]  M. Arruda,et al.  Compensation of the Schlieren effect in flow-injection analysis by using dual-wavelength spectrophotometry , 1990 .

[225]  M. Tabata,et al.  Kinetic and spectrophotometric determination of trace zinc(II) in the presence of a large amount of lead(II) using ligand-substitution reactions of their metalloporphyrins with EDTA. , 1989 .

[226]  Z. Marczenko,et al.  Spectrophotometric determination of iron(III) with chrome azurol s or eriochrome cyanine r and some cationic surfactants , 1981 .

[227]  M. Koupparis,et al.  Automated flow injection spectrophotometric determination of para- and meta-substituted phenols of pharmaceutical interest based on their oxidative condensation with 1-nitroso-2-naphthol. , 1990, The Analyst.

[228]  K. Fuwa,et al.  Liquid core optical fiber total reflection cell as a colorimetric detector for flow injection analysis , 1985 .

[229]  M. Aoyagi,et al.  Rapid spectrophotometric determination of total phosphorus in industrial wastewaters by flow injection analysis including a capillary digestor , 1988 .

[230]  A. Wade,et al.  The spectrophotometric determination of hydroxylamine alone and in the presence of hydrazine by flow injection analysis , 1983 .

[231]  E. Zagatto,et al.  Spectrophotometric flow-injection determination of sucrose and total reducing sugar in sugar-cane juice and molasses , 1988 .

[232]  J. Itoh,et al.  A highly sensitive spectrophotometric determination of cadmium with α,β,γ,δ-Tetrakis(4-N-trimethylaminophenyl)-porphine , 1988 .

[233]  I. Millán,et al.  Spectrophotometric determination of indium in nickel alloys and zinc ores with 1-(2-pyridylmethylideneamine)-3-(salicylideneamine)thiourea. , 1986, Talanta.

[234]  H. Freiser,et al.  Extraction separation of tervalent lanthanide metals with bis(2,4,4-trimethylpentyl)phosphinic acid , 1989 .

[235]  I. Singh,et al.  Spectrophotometric Determination of Bismuth(III) and Indium(III) with 2,4,6-Tris(2-hydroxy-4-sulfo-1-naphthylazo)-1,3,5-triazine Trisodium Salt (THT) , 1988 .

[236]  P. Gupta,et al.  An improved spectrophotometric determination of silicate in water based on molybdenum blue , 1985 .

[237]  Y. Fujita,et al.  Spectrophotometric determination of minocycline using zirconium(IV), o-hydroxyhydroquinonephthalein and fluoride ions in the presence of sodium dodecyl sulfate. , 1983, Chemical and pharmaceutical bulletin.

[238]  J. Ingle,et al.  Automated sample cell cleaner , 1987 .

[239]  M. Mehra,et al.  Spectrophotometric determination of iron(II) after separation by adsorption of its complex with 3-(4-phenyl-2-pyridyl)-5,6-diphenyl-1,2,4-triazine and tetraphenylborate on microcrystalline naphthalene. , 1984, Talanta.

[240]  H. Ishii,et al.  Synthesis of Sensitive Pyridylhydrazone Reagents and Extraction-Spectrophotometric Determination of Trace Nickel with 2-Pyridinecarbaldehyde 2-(5-Nitro)pyridylhydrazone , 1987 .

[241]  J. P. Riley,et al.  The spectrophotometric determination of antimony in water, effluents, marine plants and silicates , 1981 .

[242]  S. Maspoch,et al.  Determination of cyanide by a highly sensitive indirect spectrophotometric method. , 1984, Talanta.

[243]  G. Christian,et al.  Reversible optosensing in packed flow-through detectors: flow injection or chromatography? , 1990 .

[244]  F. Wei,et al.  Spectrophotometric determination of iron in aluminium alloys using 2-(5-bromo-2-pyridylazo)-5-diethylaminophenol , 1983 .

[245]  R. K. Bansal,et al.  Spectrophotometric determination of tellurium after separation by coprecipitation of its trifluoroethylxanthate with naphthalene , 1984 .

[246]  H. Koh,et al.  Spectrophotometric and analogue derivative spectrophotometric determination of ultramicro amounts of cadmium with cationic porphyrins. , 1982, Talanta.

[247]  S. Motomizu,et al.  Solvent extraction of copper as its ion association complex with ethyl violet and its application to the spectrophotometric determination of copper , 1987 .

[248]  A. Ba̧kowski,et al.  The use of bathoferroine for extraction-spectrophotometric determinations of microamounts of perchlorate and perrhenate , 1984 .

[249]  I. Bershtein Criteria and algorithms for the choice of analytical wave-lengths in the quantitative spectrophotometric analysis of multicomponent mixtures , 1988 .

[250]  T. Hoshino,et al.  Application of photodiode array ultraviolet detector to unresolved peak analysis , 1984 .

[251]  R. Synovec,et al.  Single optical fiber, position-sensitive detector-based multiwavelength absorbance spectrophotometer , 1990 .

[252]  Ying-quan Zhu,et al.  Determination of water-soluble ammonium ion in soil by spectrophotometry , 1987 .

[253]  A. Alexiev,et al.  A selective catalytic colorimetric determination of manganese in subnanogram amounts through oxidation of sulphanilic acid by potassium periodate with 1,10-phenanthroline as activator , 1985 .

[254]  L. Chau,et al.  Calcichrome: a re-examination of its structure and chemical properties by solid- and liquid-state NMR, infrared spectroscopy, and selective chemical degradation , 1989 .

[255]  Yi He,et al.  Spectrophotometric determination of thorium in thorium-tungsten alloys with m-carboxychlorophosphonazo , 1987 .

[256]  R. Narayanaswamy,et al.  An optical calcium ion sensor , 1988 .

[257]  M. Abdelsalam,et al.  Spectrophotometric Determination of Some Tranquillizers and Antidepressants Using 2,3-Dichloro 5,6-Dicyano-p-Benzoquinone , 1985 .

[258]  T. Sano,et al.  Automated micro stopped-flow/continuous-flow apparatus for serial measurement of enzyme reactions and its application as a real-time analyser for column chromatography , 1989 .

[259]  R. Caletka,et al.  Extraction of molybdenum and tungsten with various reagents , 1989 .

[260]  A. Gómez-Hens,et al.  Kinetic determination of urea in serum by stopped-flow spectrophotometry , 1990 .

[261]  M. M. Abdel-khalek,et al.  Utility of 2,3-dichloro-5,6-dicyano-p-benzoquinone in assay of codeine, emetine and pilocarpine. , 1985, Talanta.

[262]  Anjaneyulu Yerramilli,et al.  Extractive spectrophotometric method for the determination of vanadium(V) in steels and titanium base alloy , 1986 .

[263]  H. Wada,et al.  Spectrophotometric determination of silver with 4-(3,5-dibromo-2-pyridylazo)-N,N-diethylaniline in the presence of sodium dodecylsulfate , 1986 .

[264]  M. Trojanowicz,et al.  Simultaneous flow-injection determination of aluminium and zinc using LED photometric detection , 1990 .

[265]  E. Voigtman,et al.  Condensed phase photoacoustic spectroscopic detection of porphyrins and dyes , 1981 .

[266]  Y. Fujita,et al.  Determination of titanium(IV) using o-hydroxyhydroquinonephthalein and Tween 20. , 1982 .

[267]  F. Salinas,et al.  Simultaneous determination of cobalt and nickel by first-derivative spectrophotometry , 1988 .

[268]  C. Tongyue,et al.  Spectrophotometric determination of trace amounts of thallium with 7-(4,5-dimethylthiazolyl-2-azo)-8-hydroxyquinoline-5-sulphonic acid. , 1985, Talanta: The International Journal of Pure and Applied Analytical Chemistry.

[269]  H. Ishii,et al.  Determination of micro-amounts of nickel by extraction-spectrophotometry with 2,2'-dipyridyl-2-benzothiazolylhydrazone and increase of its sensitivity by analogue-derivative spectrophotometry , 1983 .

[270]  P. Ramappa,et al.  Rapid spectrophotometric determination of phenothiazines with molybdophosphoric acid , 1979 .

[271]  T. S. Sheriff,et al.  Spectrophotometric determination of hydrogen peroxide after extraction with ethyl acetate , 1989 .

[272]  Á. Ríos,et al.  Spectrophotometric determination of cyanide by unsegmented flow methods. , 1984, Talanta.

[273]  Y. Fujita,et al.  A color reaction of 1,2-diphenols based on colored complex formation with phenylfluorone and iron(III) and its application to the assay of catecholamines in pharmaceutical preparations. , 1985, Chemical & pharmaceutical bulletin.

[274]  L. Danielsson,et al.  The analysis of aqueous solutions with ethanol-soluble reagents in a flow injection system , 1984 .

[275]  M. Balcerzak Flotation-spectrophotometric determination of ruthenium in the Ru(IV)-chloride-rhodamine 6G-toluene system , 1985 .

[276]  P. R. Natarajan,et al.  Extraction of palladium from nitric acid medium and its spectrophotometric determination using arsenazo III , 1990 .

[277]  D. T. Rossi,et al.  Effects of wavelength range on the simultaneous quantitation of polynuclear aromatic hydrocarbons with absorption spectra , 1985 .

[278]  F. Krug,et al.  On-line electrolytic dissolution of alloys in flow-injection analysis : Part 1. Principles and application in the determination of soluble aluminium in steels , 1986 .

[279]  I. Singh,et al.  A rapid spectrophotometric method for determination of zinc in milk. , 1981, Talanta: The International Journal of Pure and Applied Analytical Chemistry.

[280]  C. L. Bashford,et al.  Spectrophotometry and spectrofluorimetry : a practical approach , 1987 .

[281]  V. Kuban,et al.  Determination of the sum of rare-earth elements by flow-injection analysis with Arsenazo III, 4-(2-pyridylazo)resorcinol, Chrome Azurol S and 5-bromo-2-(2-pyridylazo)-5-diethylaminophenol spectrophotometric reagents. , 1988, Talanta.

[282]  B. Morelli Spectrophotometric determination of rhodium(III) in aqueous and alcoholic media using 2-thiobarbituric acid , 1983 .

[283]  D. Johnson,et al.  A study of some pyridylazo dyestuffs as chromogenic reagents and the elucidation of the nature of their metal complex spectra. , 1975, Talanta.

[284]  M. Zenki,et al.  Determination of residual chlorine in tap water by flow-injection spectrophotometry , 1988 .

[285]  S. Maspoch,et al.  Diode-array detectors in flow-injection analysis Mixture resolution by multi-wavelength analysis. , 1987, Talanta.

[286]  S. Kawakubo,et al.  Flow-injection spectrophotometric determination of trace vanadium based on catalysis of the gallic acid bromate reaction , 1986 .

[287]  I. Sekerka,et al.  Automated method for the determination of boron in water by flow-injection analysis with in-line preconcentration and spectrophotometric detection , 1990 .

[288]  H. Singh,et al.  Direct spectrophotometric determination of trace amounts of mercury(II) in aqueous media as its dithizonate complex in the presence of a neutral surfactant , 1989 .

[289]  H. Farsam,et al.  Spectrophotometric determination of meperidine hydrochloride in pharmaceutical preparations by complexation with bromocresol green. , 1984, Journal of pharmaceutical and biomedical analysis.

[290]  J. L. Fasching,et al.  Sampling and determination of boron in the atmosphere , 1983 .

[291]  V. Cerdà,et al.  Spectrophotometric determination of silicate with Rhodamine B by flow-injection analysis , 1990 .

[292]  T. Sakai,et al.  Extraction-spectrophotometric determination of trace iron (II) in sea water with 2-[2-(3,5-dibromopyridyl)azo]-5-diethylaminobenzoic acid , 1989 .

[293]  Tsuyoshi Watanabe,et al.  Solvent Extraction and Spectrophotometric Determination of Nickel (II) with Thiazole-2-carbaldehyde 2-Quinolylhydrazone , 1986 .

[294]  M. I. Toral,et al.  Spectrophotometric and derivative spectrophotometric determination of iron by extraction of the iron(II)-TPYZ-picrate ion-association complex. , 1989, Talanta.

[295]  R. Kuroda,et al.  Determination of uranium and thorium in phosphate rocks by a combined ion-exchange — Spectrophotometric method , 1985 .

[296]  V. Tomás,et al.  Flow injection determination of oxidants with leuco-thionine blue , 1988 .

[297]  R. Murthy,et al.  Determination of Uranium and Thorium with Arsenazo III after Sequential Extraction from Acid-deficient Aluminium Nitrate Medium , 1980 .

[298]  R. T. Fowler,et al.  Measurement of magnesium by continuous-flow colorimetry. , 1982, Clinical chemistry.

[299]  B. Morelli,et al.  Spectrophotometric Determination of Cephalosporins in Pure Form and in Pharmaceutical Preparations , 1985 .

[300]  M. Trojanowicz,et al.  Multicomponent analysis with a computerized flow injection system using LED photometric detection , 1991 .

[301]  F. Pablos,et al.  Ion-pair extraction and spectrophotometric determination of potassium using dibenzo-18-crown-6 and bromothymol blue , 1989 .

[302]  A. Gómez-Hens,et al.  The stopped-flow technique in analytical chemistry , 1991 .

[303]  Y. Iida Repetitive spectral subtraction method for the spectrophotometric determination of rare earth elements , 1987 .

[304]  G. Ackermann Photometric determination of arsenic in high-purity chemicals , 1985 .

[305]  K. M. Rao,et al.  Determination of trace amounts of mercury(II) and silver(I): a catalytic method , 1988 .

[306]  H. Kawamoto,et al.  A Color Reaction of Cadmium(II) with Dithizone in Methyltrioctylammonium Thiocyanate Medium , 1985 .

[307]  T. T. Lub,et al.  Improvement of the performance of a diode-laser spectrometer by using sweep averaging and numerical data processing , 1990 .

[308]  Gary D. Christian,et al.  Sample Handling and Pretreatment Using Flow Injection Analysis , 1990 .

[309]  O. Røyset Comparison of four chromogenic reagents for the flow-injection determination of aluminum in water , 1985 .

[310]  G. Pacey,et al.  Spectrophotometric determination of lithium ion with the chromogenic crown ether, 2″,4″-dinitro-6″-trifluoromethylphenyl-4′-aminobenzo-14-crown-4 , 1984 .

[311]  A. E. Bird,et al.  Spectrophotometric assay of clavulanic acid by reaction with imidazole , 1982 .

[312]  J. Hernández-Méndez,et al.  Spectrophotometric flow-injection determination of ascorbic acid by generation of triiodide , 1986 .

[313]  H. Ishii,et al.  Spectrophotometric determination of manganese utilizing metal ion substitution in the cadmium-α,β,-γ,δ -tetrakis(4-carboxyphenyl)porphine complex , 1982 .

[314]  H. Bode,et al.  Zur photometrischen Bestimmung kleiner Selenmengen , 1987 .

[315]  K. Ueno,et al.  Spectrophotometric determination of sodium by ion-pair extraction with crown ether complexes and monoanionic dyes , 1981 .

[316]  S. Maspoch,et al.  Application of a photodiode array detector to multi-component determination by flow injection analysis , 1987 .

[317]  K. Fuwa,et al.  Determination of phosphorus in natural waters by long-capillary-cell absorption spectrometry , 1983 .

[318]  Miguel Valcárcel,et al.  Photometric determination of tartaric acid in wine by flow injection analysis , 1986 .

[319]  Z. Marczenko,et al.  Flotation-spectrophotometric determination of rhodium using stannous chloride and Rhodamine 6G , 1985 .

[320]  T. R. Dulski A rapid procedure for the simultaneous determination of zirconium and hafnium in high-temperature alloys by means of a spectrophotometric masking approach. , 1982, Talanta: The International Journal of Pure and Applied Analytical Chemistry.

[321]  F. Pino,et al.  Derivatives of carbohydrazide, thiocarbohydrazide and diaminoguanidine as photometric analytical reagents. IV , 1984 .

[322]  M. Cunningham,et al.  Plasma hemoglobin determination by recording derivative spectrophotometry. , 1986, American journal of clinical pathology.

[323]  J. Aznárez,et al.  Extraction-spectrophotometric determination of niobium with N-phenylbenzohydroxamic acid and 4-(2-pyridylazo)resorcinol in non-aqueous media , 1985 .

[324]  Ines R. Altemose Evolution of Instrumentation for UV-Visible Spectrophotometry. Part I. , 1986 .

[325]  A. Gómez-Hens,et al.  Modular stopped-flow/diode-array detection system for simultaneous kinetic analysis , 1989 .

[326]  M. H. Córdoba,et al.  Manual and fia methods for the determination of cadmium with malachite green and iodide. , 1988, Talanta.

[327]  E. Sekido,et al.  The selective extraction and spectrophotometric determination of copper and silver by the use of a thiocrown compound 1,4,8,11-tetrathiacyclotetradecane. , 1984 .

[328]  S. Motomizu,et al.  Extraction-spectrophotometric determination of aluminium in river water with pyrocatechol violet and a quaternary ammonium salt. , 1980, Talanta.

[329]  Z. Marczenko,et al.  Sensitive flotation-spectrophotometric determination of osmium based on the osmium(IV)-chloride-rhodamine 6 G system , 1982 .

[330]  C. Ojeda,et al.  Derivative ultraviolet-visible region absorption spectrophotometry and its analytical applications. , 1988, Talanta.

[331]  K. Ueda,et al.  Complexing properties of thiazolylazophenols and spectrophotometric determination of iron(II) with 2-(2-benzothiazolylazo)-4-methoxyphenol , 1984 .

[332]  Jiaomai Pan,et al.  Reaction of yttrium with p-nitrochlorophosphonazo and the spectrophotometric determination of yttrium in nickel-base alloys in the presence of cerium sub-group rare earths , 1985 .

[333]  Jc Deandrade,et al.  SEQUENTIAL SPECTROPHOTOMETRIC DETERMINATION OF CHROMIUM(III) AND CHROMIUM(VI) USING FLOW-INJECTION ANALYSIS , 1985 .

[334]  V. Gupta,et al.  Spectrophotometric determination of trace amounts of hydrazine in polluted water. , 1988, The Analyst.

[335]  S. Maspoch,et al.  5-phenylazo-8-aminoquinoline as a sensitive reagent for the extraction-spectrophotometric determination of palladium(II) , 1983 .

[336]  J. March,et al.  Kinetic-catalytic determination of manganese(II) by means of succinimidedioxime , 1983 .

[337]  Keiko Watanabe,et al.  Continuous-flow system for the determination of cobalt in sea and river water , 1988 .

[338]  Y. Yamamoto,et al.  Rapid determination of trace amounts of phosphate and arsenate in water by spectrophotometric detection of their heteropoly acid--malachite green aggregates following pre-concentration by membrane filtration. , 1987, The Analyst.

[339]  M. Takagi,et al.  Extraction and photometric determination of lead with diazacrown ether dye. , 1986, Talanta.

[340]  M. Trojanowicz,et al.  Flow injection spectrophotometric determination of the biuret content in urea fertilisers , 1990 .

[341]  S. Shibata,et al.  2-[2-(5-Bromopyridyl)azo]-5-dimethylaminophenol; a new sensitive reagent for cadmium , 1976 .

[342]  H. Pardue,et al.  Evaluation of absorption and first- and second-derivative spectra for simultaneous quantification of bilirubin and hemoglobin. , 1986, Clinical chemistry.

[343]  R. J. May,et al.  Determination of selected chlorodibenzofurans and chlorodibenzodioxins using two-dimensional gas chromatography/mass spectrometry , 1986 .

[344]  F. Krug,et al.  Rapid determination of sulphate in natural waters and plant digests by continuous flow injection turbidimetry , 1977 .

[345]  S. Nakashima,et al.  Determination of nitrate in natural waters by flow-injection analysis , 1984 .

[346]  K. Kimura,et al.  Flow injection of lithium ion using chromogenic 14-crown-4 derivatives as extraction-spectrophotometric reagents. , 1990, The Analyst.

[347]  E. Kiss Ion-exchange separation and spectrophotometric determination of boron in geological materials , 1988 .

[348]  Eva A. Terpinski Spectrophotometric determination of trace amounts of tellurium(IV) with tetramethylthiourea , 1988 .

[349]  D. Burns,et al.  Spectrophotometric determination of cobalt after extraction of tetrathiocyanatocobaltate(II) with brilliant green into microcrystalline naphthalene , 1986 .

[350]  C. Kantipuly,et al.  Review of methods for the determination of lanthanides in geological samples. , 1988, Talanta.

[351]  R. Łobiński,et al.  Spectrophotometric determination of molybdenum in biological materials based on flotation of its 3,5-dinitrocatechol complex associated with rhodamine B , 1990 .

[352]  E. Novikov,et al.  Flow-injection extraction spectrophotometric method for the determination of lead and its combination with minicolumn preconcentration , 1990 .

[353]  V. Gupta,et al.  Spectrophotometric method for the determination of cyanide and its application to biological fluids. , 1984, The Analyst.

[354]  H. Freiser,et al.  Spectrophotometric Determination of Trace Elements , 1981 .

[355]  T. Koh,et al.  Spectrophotometric determination of trace amounts of silver(I) by formation of dicyanoargentate(I) and solvent extraction with methylene blue , 1979 .

[356]  S. Motomizu,et al.  Spectrophotometric determination of aluminium with bromopyrogallol red and a quaternary ammonium salt: Determination of aluminium in river water , 1983 .

[357]  S. Kallmann A survey of the determination of the platinum group elements. , 1987, Talanta.

[358]  F. Belal,et al.  Spectrophotometric determination of benzothiadiazines in dosage forms. , 1986, Talanta.

[359]  C. Sánchez-Pedreño,et al.  Spectrophotometric determination of uranium in sea water with thiocyanate and rhodamine B , 1985 .

[360]  I. McKelvie,et al.  Spectrophotometric determination of dissolved organic phosphorus in natural waters using in-line photo-oxidation and flow injection , 1989 .

[361]  K. Johnson,et al.  Reagent-injection flow analysis: application to the determination of nanomolar levels of hydrogen peroxide in seawater , 1987 .

[362]  A. J. Barnard,et al.  Determination of total cyanide in thiocyanate-containing wastewaters , 1983 .

[363]  M. Balcerzak,et al.  Sensitive flotation-spectrophotometric determination of ruthenium with tin(II) chloride and Rhodamine 6G , 1988 .

[364]  A. Issa,et al.  The use of chloranil for spectrophotometric determination of some tranquillizers and antidepressants. , 1983, Talanta.

[365]  J. T. Woodcock,et al.  Determination of diethyl dithiophosphate in flotation liquors by solvent extraction and ultraviolet spectrometry , 1986 .

[366]  W. Quianfeng Study of the titanium-phenylfluorone complex formed in the presence of Triton X-305 and emulsifier OP. , 1985, Talanta: The International Journal of Pure and Applied Analytical Chemistry.

[367]  M. Balcerzak Sensitive spectrophotometric determination of osmium with tin(II) chloride and rhodamine B after flotation using cyclohexane. , 1988, The Analyst.

[368]  A. A. Kheir,et al.  The Use of Charge Transfer Complexation in the Spectrophotometric Determination of Some Corticosteroid Drugs Through Intermediate Oxime Formation , 1986 .

[369]  V. J. Koshy,et al.  Spectrophotometric determination of chloride in PtAl(2)O(3)/SiO(2) catalysts with Hg(SCN)(2)Fe(3+) reagent. , 1987, Talanta.

[370]  H. Ishii,et al.  Indirect spectrophotometric determination of trace cyanide with cationic porphyrins. , 1991, Talanta.

[371]  G. Sanderink,et al.  Quantitative measurement of plasma hemoglobin by second derivative spectrophotometry. , 1985, Clinica chimica acta; international journal of clinical chemistry.

[372]  E. Marchevsky,et al.  Spectrophotometric determination of vanadium in steel and alloys with 2-(5-chloro-2-pyridylazo)-5-dimethylaminophenol , 1987 .

[373]  J. F. Staden Automated simultaneous determination of nitrate and nitrite by pre-valve reduction of nitrate in a flow-injection system , 1982 .

[374]  M. El-shahat,et al.  Spectrophotometric study of vanadium(V)-phenylfluorone complex , 1985 .

[375]  M. I. Toral,et al.  Extraction-spectrophotometric determination of iron as the ternary tris(1,10-phenanthroline)-iron(II)-picrate complex , 1985 .

[376]  Y. Fujita,et al.  Color reaction between keto acid or hydroxy acid and 9-(2'-carboxyphenyl)-4,5-dibromo-2,3,7-trihydroxy-6-fluorone-alu minum( III) complex and its application to the determination of beta-phenylpyruvic acid. , 1985, Chemical & pharmaceutical bulletin.

[377]  D. Burns,et al.  Spectrophotometric determination of perchlorate after extraction of its brilliant green ion-pair with microcrystalline benzophenone , 1987 .

[378]  M. Kan,et al.  Determination of phosphate, arsenate and arsenite in natural water by flotation-spectrophotometry and extraction-indirect atomic absorption spectrometry using Malachite Green as an ion-pair reagent , 1988 .

[379]  K. Uesugi,et al.  Spectrophotometric determination of aluminium with Chromal Blue G in the presence of cetyltrimethylammonium chloride , 1985 .

[380]  T. Kato Flow-injection spectrophotometric determination of enalapril in pharmaceuticals with bromothymol blue , 1985 .

[381]  K. Hirayama,et al.  Spectrophotometric catalytic determination of an ultratrace amount of iron(III) in water based on the oxidation of N,N-dimethyl-p-phenylenediamine by hydrogen peroxide , 1988 .

[382]  Isoshi Nukatsuka,et al.  Determination of trace amounts of aluminium in tap water by spectrophotometry after collection on a membrane filter using Chrome Azurol S and Zephiramine , 1988 .

[383]  G. Pacey,et al.  Extraction of potassium with trifluoromethyl-substituted chromogenic crown ethers , 1981 .

[384]  Y. Agrawal,et al.  Separation and determination of microgram amounts of lanthanum(III) using N-phenylbenzohydroxamic acid and xylenol orange , 1987 .

[385]  Á. Ríos,et al.  Determination of vitamin C in urine by flow injection analysis. , 1986, The Analyst.

[386]  O. Borggaard,et al.  Determination of silicon in soil extracts by flow injection analysis , 1985 .

[387]  L. Capitán-Vallvey,et al.  Spectrophotometric determination of vanadium in petroleum crudes and derivatives , 1982 .

[388]  A. Jensen,et al.  Differential kinetic analysis and flow injection analysis: Part 2. The (2.2.1) Cryptates of Magnesium and Calcium , 1979 .

[389]  F. Strelow Determination of traces of titanium down to sub-part-per-million levels in molybdenum metal and compounds by ion exchange chromatography/spectrophotometry , 1986 .

[390]  J. Ruzicka,et al.  The first decade of flow injection analysis: from serial assay to diagnostic tool , 1986 .

[391]  K. Reddy,et al.  Sensitive and selective spectrophotometric method for the determination of trace amounts of osmium with 1,2,3-indanetrione monothiosemicarbazone , 1985 .

[392]  H. Singh,et al.  Spectrophotometric and high-order derivative spectrophotometric study of the indium-1-(2-pyridylazo)-2-naphthol complex in the aqueous phase , 1986 .

[393]  Oddvar R⊘yset Flow-injection spectrophotometric determination of aluminium in water with pyrocatechol violet , 1986 .

[394]  T. Anfält,et al.  The determination of bromide in natural waters by flow injection analysis , 1986 .

[395]  M. Tabata,et al.  Different Kinetic Behavior of Zinc(II), Cadmium(II), and Lead(II) Porphyrins in the Ligand-Substitution Reaction with Ethylenediaminetetraacetic Acid , 1991 .

[396]  K. Jones New lamps for old — recent progress in UV sources for absorption detectors in liquid chromatography , 1990 .

[397]  M. M. Abdel-khalek,et al.  Spectrophotometric determination of phenothiazines, tetracyclines and chloramphenicol with sodium cobaltinitrite. , 1984, Talanta.

[398]  Z. Marczenko,et al.  Study of the system Os(IV)-chloride-brilliant green: Extraction-spectrophotometric determination of osmium , 1984 .

[399]  M. Muñoz,et al.  Determination of formaldehyde in air by flow injection using pararosaniline and spectrophotometric detection , 1989 .

[400]  M. Jarosz,et al.  Flotation-spectrophotometric method for determining palladium by means of the ion-association complex of pentabromopalladate(II) with Rhodamine 6G. , 1981, Talanta.

[401]  P. Dasgupta Multipath cells for extending dynamic range of optical absorbance measurements , 1984 .

[402]  G. Habermehl,et al.  ReviewPure appl. Chem: Rinehart, K. L., et al. Marine natural products as sources of antiviral, antimicrobial, and antineoplastic Agents. 53, 795 (1981). (K. L. Rinehart, University of Illinois, Urbana, IL 61801, U.S.A.) , 1983 .

[403]  C. Martire,et al.  Sensitive and selective spectrophotometric determination of aluminium with Chrome Fast Pure Blue B and cetyltrimethylammoniumbromide , 1985 .

[404]  T. Sakai Solvent extraction–spectrophotometric determination of berberine and benzethonium in drugs with tetrabromophenolphthalein ethyl ester by batchwise and flow injection methods , 1991 .

[405]  C. Tran,et al.  Simultaneous Determination of Two-Component Mixtures and pHs by Dual-Wavelength Thermal Lens Spectrometry , 1989 .

[406]  L. Lépine,et al.  Ultraviolet spectrophotometric determination of gadolinium in concentrated solutions of nitrate salts , 1986 .

[407]  P. Worsfold,et al.  Spectrophotometric field monitor for the determination of nitrate in river water : Statistical analysis of the results from a nine-month field trial , 1989 .

[408]  M. Arruda,et al.  A simple stopped-flow method with continuous pumping for the spectrophotometric flow-injection determination of boron in plants , 1987 .

[409]  E. Kavlentis Spectrophotometric determination of hydroxylamine using the DPGH-iron(II)-NH2OH ternary complex , 1988 .

[410]  M. Oshima,et al.  Spectrophotometric determination of silicate with molybdate and Malachite Green by flotation-dissolution and filtration-dissolution methods , 1989 .

[411]  F. Krug,et al.  Determination of molybdenum in steels by flow-injection spectrophometry , 1984 .

[412]  S. H. Mehta,et al.  Photometric determination of iodine in iodated salt using diphenylcarbazide , 1986 .

[413]  O. Lau,et al.  Spectrophotometric Determination of Calcium with Chlorindazon C , 1980 .

[414]  S. Nagashima Simultaneous reaction rate spectrophotometric determination of cyanide and thiocyanate by use of the pyridine-barbituric acid method , 1984 .

[415]  Z. Marczenko,et al.  Sensitive flotation—spectrophotometric determination of rhodium with malachite green , 1979 .

[416]  T. Pal,et al.  Use of a silver-gelatin complex for the determination of micro-amounts of hydrazine in water , 1986 .

[417]  G. Pacey,et al.  Ion-pair extractions with 12-crown-4 and its analogues. , 1984, Talanta.

[418]  H. Freiser,et al.  Mixed ligand chelate extraction of lanthanides in 8-quinolinol-tetra-n-heptylammonium chloride systems , 1981 .

[419]  G. Ackermann,et al.  Photometrische Bestimmung von Arsen in hochreinen Chemikalien , 1985 .

[420]  J. March,et al.  Kinetic determination of technetium(VII) based on oxidative transformation of variamine blue catalysed by copper(II) , 1985 .

[421]  P. B. Issopoulos Spectrophotometric determination of certain cephalosporins using molybdophosphoric acid. Part II. Determination of cefadroxil, cefapirin, ceforanide and cefuroxime. , 1989, The Analyst.

[422]  R. Eldik,et al.  Compact, transportable, and multipurpose high‐pressure unit for UV–VIS spectroscopic measurements at pressures up to 200 MPa , 1988 .

[423]  H. Wada,et al.  Spectrophotometric determination of fluoride with lanthanum/alizarin complexone by flow injection analysis , 1985 .

[424]  A. Sharma,et al.  The effect of barbituric acid concentration in the spectrophotometric determination of cyanide and thiocyanate by the pyridine-barbituric acid method , 1985 .

[425]  L. Sommer,et al.  On the spectrophotometric determination of with 2-(5-bromo-2-pyridylazo)-5-diethylaminophenol , 1988 .

[426]  Y. Agrawal,et al.  Separation and microdetermination of rare earth metals with N-phenylbenzohydroxamic acid and Xylenol Orange , 1987 .

[427]  Chenglong Ma,et al.  Flow-injection catalytic kinetic determination of manganese using stopped-flow and gradient calibration , 1990 .

[428]  H. Ishii,et al.  Spectrophotometric determination of micro amounts of cobalt by metal-substitution in the cadmium-α,β,γ,δ-tetrakis (4-sulphophenyl)porphine complex , 1983 .

[429]  Jc Deandrade,et al.  EFFECT OF ONLINE COMPLEX-FORMATION KINETICS ON THE FLOW-INJECTION ANALYSIS SIGNAL - THE SPECTROPHOTOMETRIC DETERMINATION OF CHROMIUM(VI) , 1983 .

[430]  N. Gowda,et al.  Extractive spectrophotometric determination of trace amounts of molybdenum using thiocyanate and ethylisobutrazine hydrochloride , 1985 .

[431]  M. Jarosz,et al.  Indirect spectrophotometric determination of fluoride using the ternary system: Thorium-chrome azurol S-cetyltrimethylammonium , 1984 .

[432]  R. Simpson,et al.  Use of scanning diode array detector with reversed-phase microbore columns for the real-time spectral analysis of aromatic amino acids in peptides and proteins at the subsmicrogram level: Applications to peptide and protein microsequencing , 1986 .

[433]  J. Parks,et al.  Carboxyhemoglobin determination by second-derivative spectroscopy. , 1985, Clinical chemistry.

[434]  G. Font,et al.  Extraction-spectrophotometric determination of hydrazine with 2-hydroxy-1-naphthaldehyde , 1987 .

[435]  Koichiro Ishii,et al.  Spectrophotometric determination of atmospheric nitrogen monoxide and nitrogen dioxide after collection with [N,N'-ethylenebis(salicylideniminato)]cobalt , 1983 .

[436]  M Pascoe,et al.  Spectrophotometric methods for the determination of manganese. , 1990, Talanta.

[437]  S. B. Savvin,et al.  5-azo derivatives of rhodanine and its analogues in the analytical chemistry of the noble metals. , 1987, Talanta.

[438]  A. N. Baga,et al.  A simple spectrophotometric determination of hydrogen peroxide at low concentrations in aqueous solution , 1988 .

[439]  I. Němcová,et al.  Spectrophotometric study of the reaction of thallium with brompyrogallol red: The effect of the cationogenic tenside Septonex , 1987 .

[440]  E. Salin,et al.  Data acquisition considerations for spectrometry with photodiode array detection systems , 1985 .

[441]  Criteria for selecting analytical wavelengths for multicomponent mixtures by the CPA matrix method and simultaneous spectrophotometric determination of niobium and tantalum , 1988 .

[442]  R. Stauffer Determination of arsenic and phosphous compounds in groundwater with reduced molybdenum blue , 1983 .

[443]  G. Christian,et al.  Enzymatic determination of urea in water and serum by optosensing flow injection analysis. , 1986, The Analyst.

[444]  D. Burns,et al.  Flow-injection extraction-spectrophotometric determination of permanganate with the ethylene-bis(triphenylphosphonium) cation , 1989 .

[445]  Trevor R. Griffiths,et al.  Some aspects of the scope and limitations of derivative spectroscopy , 1982 .

[446]  P. Worsfold,et al.  Solid-state photometric detectors for flow injection analysis , 1988 .

[447]  G. Ramos,et al.  Flow-injection spectrophotometric determination of arylamines and sulphonamides by diazotization and coupling in a micellar medium , 1991 .

[448]  G. Tölg,et al.  Zur Spektralphotometrie und Emissionsspektrometrie mit Plasmenanregung (CMP, ICP) von Bor-Spuren in Metallen, Silicium und Quarz nach HF-Aufschluß und Abtrennung durch BF3-Destillation bzs. Ausschütteln von BF4−-Ionen-Assoziaten , 1980 .

[449]  K. Yoshimura,et al.  Spectrophotometric determination of germanium in rocks after selective adsorption on sephadex gel , 1988 .

[450]  C. Wyganowski Sensitive spectrophotometric determination of gallium with bromopyrogallol red in the presence of surfactants , 1982 .

[451]  H. Wada,et al.  2-(2-thiazolylazo)-4-methyl-5-(sulfomethylamino)benzoic acid as a reagent for the spectrophotometric determination of cobalt , 1982 .

[452]  W G Zijlstra,et al.  Multicomponent analysis of hemoglobin derivatives with reversed-optics spectrophotometer. , 1984, Clinical chemistry.

[453]  H. Ishii,et al.  Spectrophotometric determination of ultramicro amounts of zinc with α,β,γ,δ-tetrakis-(1-methylpyridinium-3-yl)porphine , 1982 .

[454]  Z. Marczenko,et al.  Flotation-Spectrophotometric Determination of Vanadium with 3,5-Dinitrocatechol and Rhodamine B , 1988 .

[455]  K. Oguma,et al.  Spectrophotometric flow injection analysis of silicates for manganese. , 1987 .

[456]  S. Sato Differential determination of antimony(III) and antimony(V) by solvent extraction-spectrophotometry with mandelic acid and Malachite Green, based on the difference in reaction rates. , 1985, Talanta.

[457]  M. Nakamura,et al.  Synthesis of 2-(3,5-dichloro-2-pyridylazo)-5-dimethylaminophenol and its application to the spectrophotometric determination of cobalt. , 1987, Talanta.

[458]  C. Tran,et al.  Multi-wavelength thermal lens spectrophotometer , 1990 .

[459]  E. Zagatto,et al.  Catalytic determination of molybdenum in plants by flow-injection spectrophotometry with ion-exchange separation , 1988 .

[460]  M. N. Desai,et al.  Extraction and micro-determination of manganese(II) with oxine and aliquat 336. , 1989, Talanta.

[461]  A. Fernandez-Gutiérrez,et al.  Spectrophotometric determination of BrO3− using the 1,2,4-trihydroxyanthraquinone-3-carboxylic acid as reagent , 1984 .

[462]  R. Núñez,et al.  Extraction and spectrophotometric determination of titanium(IV) with alizarin and fluoride. , 1986, Talanta: The International Journal of Pure and Applied Analytical Chemistry.

[463]  P. K. Dasgupta,et al.  Determination of tarce water in non-polar organic solvents with a flow-injection system and tin tetrachloride or antimony pentachloride , 1989 .

[464]  S. Shibata,et al.  Dual-wavelength spectrophotometry: Part VI. Qualitative and quantitative analysis by means of first-derivative spectra , 1973 .

[465]  F. Salinas,et al.  Some observations on the use of 2-oximinodimedone dithiosemicarbazone as a spectrophotometric reagent for the determination of lodate and bromate , 1988 .

[466]  Á. Ríos,et al.  Simultaneous multiwavelength detection in flow injection analysis , 1986 .

[467]  R. L. Sharma,et al.  Derivative spectrophotometric determination of mercury(II) with pan in the aqueous phase. , 1989, Talanta.

[468]  C. A. Graner,et al.  Spectrophotometric determination of chloride in plants , 1981 .

[469]  F. Bermejo-martinez,et al.  Extraction-spectrophotometric determination of molybdenum with toluene-3,4-dithiol , 1987 .

[470]  M. Q. Al-Abachi Indirect spectrophotometric microdetermination of sulfur in organic compounds using 1,5-diphenylcarbazide , 1986 .

[471]  P. Worsfold,et al.  The kinetic determination of clinically significant enzymes in an automated flow-injection system with fluorescence detection , 1986 .

[472]  D. Burns,et al.  Flow-injection extraction-spectrophotometric determination of perchlorate with brilliant green , 1989 .

[473]  H. Kimura,et al.  Spectrophotometric determination of silicon in silicates by flow-injection analysis. , 1985, Talanta.

[474]  C. Sánchez-Pedreño,et al.  Spectrophotometric determination of mercury with thiocyanate and Rhodamine B , 1984 .

[475]  J. Glennon,et al.  Use of acetohydroxamic acid in the direct spectrophotometric determination of iron(III) and iron(II) by flow injection analysis , 1987 .

[476]  F. Krug,et al.  Spectrophotometric flow injection determination of chloride in ethanol , 1981 .

[477]  K. Nakashima,et al.  The Solvent Extraction-Spectrophotometric Determination of Perchlorate Ions with Monoethynolog of Malachite Green , 1983 .

[478]  K. Verma,et al.  Spectrophotometric determination of aromatic primary amines and nitrite by flow injection analysis , 1988 .

[479]  Spectrophotometric determination of chromium in waste water and soil. , 1986, Talanta.

[480]  S. Imai,et al.  Sorption of uranium by cellulose derivatives , 1985 .

[481]  M. Ayad,et al.  Spectrophotometric determination of some pharmaceutical carbonyl compounds through oximation and subsequent charge-transfer complexation reactions. , 1986, The Analyst.

[482]  E. Novikov,et al.  The trace determination of some heavy metals in waters by flow-injection spectrophotometry and potentiometry , 1987 .

[483]  H. Wada,et al.  Sulfonated 1-(2-pyridylazo)-2-naphthols and 2-(2-pyridylazo)-1-naphthols as spectrophotometric reagents , 1982 .

[484]  S. Kuś,et al.  Determination of trace amounts of manganese in nickel by fourth-derivative spectrophotometry. , 1989, Talanta.

[485]  J. Alonso,et al.  The surfactant-sensitized analytical reaction of niobium with 8-hydroxyquinoline-5-sulphonic acid. , 1984, Talanta.

[486]  C. Matsubara,et al.  Spectrophotometric determination of hydrogen peroxide with titanium 2-((5-bromopyridyl)azo)-5-(N-propyl-N-sulfopropylamino)phe nol reagent and its application to the determination of serum glucose using glucose oxidase. , 1985, Analytical chemistry.

[487]  P. Burba,et al.  Verbundverfahren (Spektralphotometrie, ICP-OES, RFA) zur Bestimmung von Uranspuren in natürlichen Wässern , 1984 .

[488]  Y. Agrawal,et al.  Spectrophotometric determination of thiocyanate following complexation with mercury(II) and N-phenylbenzohydroxamic acid , 1987 .

[489]  A. Mohamed Spectrophotometric determination of some benzothiadiazine diuretics with 7,7,8,8-tetracyanoquinodimethane. , 1988, Talanta.

[490]  J. Gebicki,et al.  Spectrophotometric and high-performance chromatographic assays of hydroperoxides by the iodometric technique. , 1989, Analytical biochemistry.

[491]  K. Yoshimura,et al.  Ion-exchanger colorimetry-VIII Microdetermination of copper in natural waters. , 1982, Talanta.

[492]  J. Callahan,et al.  Salt effects on the surfactant-sensitized spectrophotometric determination of beryllium with Chrome Azurol S , 1982 .

[493]  S. Bialkowski,et al.  Thermo-Optical Spectrophotometries in Analytical Chemistry , 1987 .

[494]  Z. Marczenko,et al.  Sensitive flotation-spectrophotometric determination of gold based on the gold(III)/bromide/rhodamine 6G system , 1985 .

[495]  A. Townshend,et al.  Flow-injection determination of europium after on-line reduction , 1987 .

[496]  E. M. Donaldson Spectrophotometric determination of boron in iron and steel with curcumin after separation by 2-ethyl-1,3-hexanediol-chloroform extraction. , 1981, Talanta.

[497]  B. Reis,et al.  Ion exchange in flow injection analysis: Determination of Ammonium Ions at the μg 1-1 level in Natural Waters with Pulsed Nessler Reagent , 1980 .

[498]  B. Dietrich Coordination chemistry of alkali and alkaline-earth cations with macrocyclic ligands , 1985 .

[499]  H. Reijnders,et al.  Spectrophotometric determination of ozone in air with indigo disulphonate. , 1984, The Analyst.

[500]  J. Rohwedder,et al.  Catalytic reactions: determination of trace amounts of copper in natural samples , 1986 .

[501]  M. Blanco,et al.  Kinetic-spectrophotometric determination of manganese(II) at the nanogram level based on its catalytic effect on the oxidation of an azo dye with hydrogen peroxide , 1988 .

[502]  T. Lynch,et al.  Fully automatic flow injection system for the determination of uranium at trace levels in ore leachates , 1983 .

[503]  V. M. Shinde,et al.  Solvent extraction of scandium(III) , 1980 .

[504]  K. Verma,et al.  Spectrophotometric determination of primary aromatic amines with 4-N-methylaminophenol and 2-iodylbenzoate. , 1988, Talanta.

[505]  M. Otto,et al.  Optimized spectrophotometric determination of trace cobalt and manganese by their catalysis of the tiron—hydrogen peroxide reaction , 1983 .

[506]  B. Vekić,et al.  Spectrophotometric determination of chloride in non-polar media by the mercury(II) thiocyanate reaction , 1987 .

[507]  Z. Nan,et al.  Rapid spectrophotometric determination of palladium in titanium alloys with 2-(5-bromo-2-pyridylazo)-5-(diethylamino)phenol. , 1986, Talanta.

[508]  J. Burguera,et al.  Determination of cadmium in human urine by extraction with dithizone in a flow injection system , 1983 .

[509]  M. Oshima,et al.  Spectrophotometric determination of phosphorus in river water based on the reaction of vanadomolybdophosphate with malachite green , 1988 .

[510]  T. Nasu,et al.  Spectrophotometric Determination of Phosphate in Natural Water after Flotation as an Ion Pair of Molybdophosphate with Rhodamine B , 1989 .

[511]  Z. Marczenko Separation and spectrophotometric determination of elements , 1986 .

[512]  E. Sekido,et al.  Benzo Thiacrown Compounds as Extraction-Spectrophotometric Reagents for Univalent Class b Metal Ions , 1986 .

[513]  W. Mahmoud,et al.  Determination of iron in aluminium and nickel metals, non-ferrous alloys, feldspar and Portland cement using morin and Triton X-100 , 1988 .

[514]  P. Worsfold,et al.  Spectrophotometric field monitor for water quality parameters: the determination of phosphate , 1987 .

[515]  J. Ingle,et al.  Design and evaluation of a dual multichannel detector spectrometer for simultaneous molecular absorption and luminescence measurements , 1989 .

[516]  Y. Tahboub,et al.  Evaluation of multiwavelength first- and second-derivative spectra for the quantitation of mixtures of polynuclear aromatic hydrocarbons , 1985 .

[517]  K. Betty,et al.  Spectrophotometric determination of boron in nuclear-grade uranium oxides with curcumin after extraction with 2-ethylhexane-1,3-diol , 1986 .

[518]  Motoharu Tanaka,et al.  Metal ion incorporation into n-methyl-5,10,15,20-tetrakis (4-sulfonatophenyl) porphine and its differential rates as applied to the kinetic determination of copper(II) and zinc(II) in serum , 1986 .

[519]  F. Umland,et al.  Trennung von Zirkonium- und Hafnium-Komplexen an Ionenaustauschern , 1985 .

[520]  Miguel Valcárcel,et al.  Individual and simultaneous enzymatic determination of ethanol and acetaldehyde in wines by flow injection analysis , 1986 .

[521]  M. García-Vargas,et al.  Batch and flow-injection determination of ethylenediamine in pharmaceutical preparations , 1986 .

[522]  I. I. Bershteĭn,et al.  Spectrophotometric analysis in organic chemistry , 1975 .

[523]  K. M. Emara,et al.  Application of 3-methylbenzothiazolin-2-one hydrazone as a chromogenic reagent for the spectrophotometric determination of certain sulpha drugs. , 1988, The Analyst.

[524]  N. Yordanov,et al.  Spectrophotometric determination of NO2 in the working atmosphere , 1983 .

[525]  H. Freiser,et al.  Mixed ligand chelate extraction of lanthanide ions in systems involving 7-(1-vinyl-3,3,6,6-tetramethylhexyl)-8-quinolinol, 8-quinolinol, and 1,10-phenanthroline , 1981 .

[526]  M. Ichise,et al.  Overall characteristics of a liquid chromatographic detection system using a silicon photodiode array , 1982 .

[527]  M. Zaki,et al.  Determination of gallium and indium with haematoxylin in a micellar medium , 1988 .

[528]  R. Olsina,et al.  Titanium determination under high-sensitivity conditions with 2-(5-chloro-2-pyridylazo)-5-dimethylaminophenol. II. Ternary compounds of Ti(IV)-H2O2-5-ClDMPAP. , 1987 .

[529]  J. Pavón,et al.  Flow-injection—diode-array detection: a hybrid approach to the automation of simultaneous determinations of metal ions with chromogenic reagents , 1990 .

[530]  K. Verma,et al.  Manual and flow-injection spectrophotometric assay of thiols, based on their S-nitrosation. , 1991, Talanta.

[531]  H L Pardue,et al.  Evaluation of multi-wavelength derivative spectra for quantitative applications in clinical chemistry. , 1983, Clinical chemistry.

[532]  Xing Wu,et al.  Spectrophotometric determination of trace uranium in geological samples by flow injection analysis with on-line levextrel resin separation and preconcentration , 1988 .

[533]  Tokuo Shimizu,et al.  The Extraction of the Tungsten(VI)–Pyrocatechol Violet Complex with Tridodecylethylammonium Bromide , 1981 .

[534]  M. Whitaker Determination of total chromium by flow injection analysis , 1985 .

[535]  A. Fleck,et al.  Measurement of aluminium in dialysis fluid and water by a spectrophotometric procedure. , 1984, The Analyst.

[536]  K. Oguma,et al.  Spectrophotometric microanalysis of silicate rocks for manganese after fusion with a lithium carbonate — boric acid mixture , 1987 .

[537]  B. Morelli Spectrophotometric investigation of palladium(II)-2-thiobarbituric acid complexes in aqueous and aqueous ethanolic media , 1984 .

[538]  Paul R. Haddad,et al.  Ion chromatography: principles and applications: (Journal of Chromatography Library, Vol. 46), Elsevier, Amsterdam, 1990 (ISBN 0-444-88232-4). xxi + 776 pp. Price Dfl. 335.00/US $ 171.75 , 1991 .

[539]  D. B. Gomis,et al.  Extraction-spectrophotometric determination of niobium with dibenzo-18-crown-6 and thiocyanate. , 1982, Talanta.

[540]  R. Kuroda,et al.  Ion-exchange separation and spectrophotometric determination of titanium in biological materials , 1982 .

[541]  S. Heales,et al.  The determination of methaemoglobin levels by first derivative spectroscopy. , 1985, Clinica chimica acta; international journal of clinical chemistry.

[542]  Mo-hsiung Yang,et al.  Spectrophotometric and polarographic methods for the determination of silicon at ng/g levels in gallium arsenide , 1986 .

[543]  S. Kuś,et al.  Simultaneous determination of palladium and platinum as dithizonates by fifth-derivative spectrophotometry , 1987 .

[544]  Ernst Gassmann,et al.  On-column capillary flow cell utilizing optical waveguides for chromatographic applications , 1989 .

[545]  T. Katami,et al.  Extraction and spectrophotometric determination of zinc in coal fly ash and pond sediments with 2-[2-(3,5-dibromopyridyl)azo]-5-dimethylaminobenzoic acid , 1986 .

[546]  M. Korany,et al.  Colorimetric determination of p-aminophenol in the presence of paracetamol with 3-cyano-N-methoxypyridinium perchlorate. , 1982, Talanta.

[547]  D. Burns,et al.  Spectrophotometric determination of rhenium as perrhenate after extraction of its brilliant green ion-pair with microcrystalline benzophenone , 1988 .

[548]  T. Osaki,et al.  Determination of chromium(vi) in natural waters by the sorption of chromium-diphenylcarbazone with xad-2 resin. , 1983, Talanta.

[549]  A. Issa,et al.  A Sensitive Spectrophotometric Method for the Determination of Some Imidazoline Derivatives by 2,6-Dichlorophenol-Indophenol , 1986 .

[550]  J. Toei Determination of glucose in clinical samples by flow reversal flow injection analysis. , 1988, The Analyst.

[551]  A. Sanz-Medel,et al.  Analytical application of the complexation of Nb(V) with bromopyrogallol red in micellar media. , 1985, Talanta.

[552]  Y. Narusawa Flow-injection spectrophotometric determination of silicate, phosphate and arsenate with on-line column separation , 1988 .

[553]  S. Borman Photodiode array detectors for LC , 1983 .

[554]  V. Menoux,et al.  Variable path-length, low-temperature cells for absorption spectroscopy , 1985 .

[555]  L. Polo-Díez,et al.  An improved method for the spectrophotometric determination of fluoride by addition of sodium dodecyl sulphate to the fluoride/lanthanum (III)/Alizarin fluorine blue system , 1985 .

[556]  S. M. Khopkar,et al.  Liquid-liquid extraction of zirconium from hafnium and other elements with dicyclohexyl-18-crown-6 , 1991 .

[557]  Z. Marczenko,et al.  Flotation—spectrophotometric determination of osmium with thiocyanate and methylene blue , 1981 .

[558]  H. Kawabe,et al.  Spectrophotometric determination of scandium(III) with o-hydroxyhydroquinonephthalein in cationic micellar media. , 1986 .

[559]  D. Pérez-Bendito,et al.  Versatile automatic stopped-flow system for routine analysis , 1987 .

[560]  N. Hata,et al.  Spectrophotometric determination of traces of silicon in water after collection as silicomolybdenum blue on an organic-solvent-soluble membrane filter , 1987 .

[561]  B. Juskowiak,et al.  Extraction studies of metal complexes with some macrocyclic tetraaza ligands and xanthene dyes : Spectrophotometric determination of Cadmium(II) with Tetramethyltetraazacyclotetradecane and Erythrosin A , 1984 .

[562]  K. Ueno,et al.  Chromogenic crown ether reagents for spectrophotometric determinations of sodium and potassium , 1982 .

[563]  T. Shono,et al.  Extraction of alkali metal picrates with poly- and bis(crown ether)s. , 1979, Talanta.

[564]  C. Qu,et al.  Spectrophotometric determination of silver with 2-(3,5-dibromo-2-pyridylazo)-5-diethyl-aminophenol in the presence of anionic surfactant. , 1982, Talanta.

[565]  Robert Smith,et al.  Spectrophotometric determination of amines with p-chloranil , 1984 .

[566]  Jc Deandrade,et al.  ONLINE OXIDATION OF CR(III) TO CR(VI) FOR USE WITH THE FLOW-INJECTION ANALYSIS TECHNIQUE , 1984 .

[567]  W. Mahmoud,et al.  Extraction-spectrophotometric determination of iron(II) by ternary complex formation with pyrocatechol violet and cetyltrimethylammonium bromide. , 1988, Talanta.

[568]  B. M. Cordero,et al.  Determination of neodymium with 1-(2-pyridylazo)-2-naphthol by high-order derivative spectrophotometry. Application to the determination of neodymium in glasses , 1988 .

[569]  M. Llobat-Estellés,et al.  Determination of vitamin B12 as cobalt by use of a catalytic-spectrophotometric method. , 1987, The Analyst.

[570]  M. Oshima,et al.  Extraction-spectrophotometric determination of boron with 4,6-Di-tert-butyl-3-methoxycatechol and ethyl violet. , 1988, Talanta.

[571]  J. Leyva,et al.  Spectrophotometric determination of periodate with the bisthiosemicarbazones of phthalimide and 1,3-indandione , 1986 .

[572]  B. Reis,et al.  Simultaneous determination of nitrate and nitrite by flow injection analysis , 1980 .

[573]  H. Wada,et al.  Spectrophotometric determination of traces of iron with 2-(3,5-dibromo-2-pyridylazo)-5-[N-ethyl-N-(3-sulfopropyl)amino]phenol and its application in flow injection analysis , 1983 .

[574]  A Maquieira,et al.  Enzymic determination of ammonia in food by flow injection. , 1990, The Analyst.

[575]  M. Walash,et al.  Spectrophotometric determination of thioxanthenes with iodine , 1988 .

[576]  恭之 三浦,et al.  三酸化ビスマスナトリウムによる酸化を利用する微量マンガン(II)の吸光光度定量 , 1986 .

[577]  S. G. Ballard,et al.  Diode‐array spectrometer (DAPS) for visible and near‐IR absorption measurements with 10‐ns time resolution , 1986 .

[578]  A. Wasey,et al.  Spectrophotometric determination of iridium(III) and osmium(VIII) with phenanthrenequinone monoxime after extraction into molten Naphthalene , 1984 .

[579]  M. Trojanowicz,et al.  Flow-injection ultraviolet spectrophotometric determination of sulphate in natural waters , 1990 .

[580]  R. Kuroda,et al.  Anion-exchange separation and spectrophotometric determination of vanadium in silicate rocks. , 1983, Talanta.

[581]  V. J. Bhatt,et al.  Study of chlorosubstituted hydroxamic acids for the extraction-spectrophotometric determination of thallium(III) and germanium(IV) , 1986 .

[582]  B. Juskowiak,et al.  Spectrophotometric determination of trace amounts of lead(II) by ion-pair extraction with cryptand (2.2.2) and eosin , 1982 .

[583]  Optimizing performance in Spectrophotometric Multicomponent Analysis with the partial least-squares method , 1985 .

[584]  K. Nose,et al.  Spectrophotometric determination of boron with an azomethine H derivative , 1989 .

[585]  K. Johnson,et al.  Determination of reactive silicate in seawater by flow injection analysis , 1983 .

[586]  G. Kateman,et al.  Experimental optimization procedures in the determination of phosphate by flow-injection analysis , 1983 .

[587]  E. Yeung Optical Detectors for Microcolumn Liquid Chromatography , 1985 .

[588]  I. Fletcher,et al.  Determination of chlorine dioxide in potable waters using chlorophenol red. , 1985, The Analyst.

[589]  R. Núñez,et al.  Spectrophotometric study of a ternary zirconium/fluoride/alizarin complex with application to the determination of zirconium , 1987 .

[590]  J. Ruzicka,et al.  Optosensing at active surfaces — a new detection principle in flow injection analysis , 1985 .

[591]  A. Al-Warthan,et al.  Spectrophotometric determination of oxytetracycline by flow injection , 1991 .

[592]  K. Cheng,et al.  CRC Handbook of Organic Analytical Reagents , 1982 .

[593]  J. Callahan,et al.  Mechanism of surfactant-induced changes in the visible spectrometry of metal-Chrome Azurol S complexes. , 1984, Analytical chemistry.

[594]  D. Crerar,et al.  Improved spectrophotometric cell for hydrothermal solutions , 1981 .

[595]  H. Wada,et al.  Spectrophotometric determination of cobalt in steel with 2-(2-thiazolylazo)-4-methyl-5-(sulfomethylamino) benzoic acid (TAMSMB) , 1983 .

[596]  K. Yoshimura,et al.  Ion-exchanger colorimetry-I Micro determination of chromium, iron, copper and cobalt in water. , 1976, Talanta.

[597]  A. Liberatori,et al.  Hydrogen peroxide interference in the determination of chromium(VI) by the diphenylcarbazide method , 1988 .