Flow analysis-spectrophotometric determination of L-Dopa in pharmaceutical formulations by reaction with p-aminophenol.

[1]  M. de la Guardia,et al.  Spectrophotometric determination of phenol and resorcinol by reaction with p-aminophenol. , 1994, Talanta.

[2]  V. Tomás,et al.  Application of photochemical inhibition in flow injection systems: Determination of epinephrine and L-dopa. , 1993, Talanta.

[3]  M. Guardia,et al.  Simple and rapid flow-injection spectrophotometric determination of carbaryl after liquid-liquid extraction , 1993 .

[4]  M. de la Guardia,et al.  Spectrophotometric flow injection determination of formetanate and m-aminophenol in water after reaction with p-aminophenol. , 1993, Talanta.

[5]  M. Guardia,et al.  Flow injection-spectrophotometric determination of cresol compounds in water by reaction withp-aminophenol , 1993 .

[6]  M. Guardia,et al.  Spectrophotometric determination of ethiofencarb in waters by reaction with p-aminophenol , 1993 .

[7]  C. E. Efstathiou,et al.  Flow injection chemiluminometric determination of epinephrine, norepinephrine, dopamine and L-dopa. , 1993, The Analyst.

[8]  M. Guardia,et al.  Flow-injection spectrophometric determination of propoxur with p-aminophenol , 1992 .

[9]  M. Koupparis,et al.  Flow-injection stopped-flow kinetic spectrophotometric determination of drugs, based on micellar-catalysed reaction with 1-fluoro-2,4-dinitrobenzene. , 1991, Talanta.

[10]  V. Tomás,et al.  Determination of epinephrine, norepinephrine, dopamine and L-dopa in pharmaceuticals by a photokinetic method. , 1991, The Analyst.

[11]  S. T. Hassib.  Derivative Spectrophotometric Determination of Levodopa and Benserazide Hydrochloride , 1990 .

[12]  S. T. Hassib,et al.  Sepectrometric Determination of Madopar Capsules , 1990 .

[13]  P. B. Issopoulos.  High-sensitivity spectrophotometric determination of trace amounts of Levodopa, Carbidopa and α-Methyldopa , 1990 .

[14]  C. Corradini,et al.  Simultaneous measurement of L-dopa, its metabolites and carbidopa in plasma of parkinsonian patients by improved sample pretreatment and high-performance liquid chromatographic determination. , 1990, Journal of chromatography.

[15]  Issopoulos Pb.  Spectrophotometric determination of microquantities of Carbidopa, Levodopa and alpha-methyldopa using molybdatophosphoric acid. , 1989 .

[16]  C. Benedict.  Simultaneous measurement of urinary and plasma norepinephrine, epinephrine, dopamine, dihydroxyphenylalanine, and dihydroxyphenylacetic acid by coupled-column high-performance liquid chromatography on C8 and C18 stationary phases. , 1987, Journal of chromatography.

[17]  T. Ishimitsu,et al.  Determination of m- and p-O-methylated products of L-3,4-dihydroxyphenylalanine using high-performance liquid chromatography and electrochemical detection. , 1985, Analytical biochemistry.

[18]  B. Matouš,et al.  A spectrophotometric assay for mammalian tyrosinase utilizing the formation of melanochrome from L-dopa. , 1985, Analytical biochemistry.

[19]  P. Johansson,et al.  A method for very rapid determinations of catechols using ion-pairing reverse phase HPLC with electrochemical detection: effects of L-dopa treatment on the catechol content in various rat brain structures. , 1985, Life sciences.

[20]  L. Kao,et al.  Flow-injection analysis of catecholamine secretion from bovine adrenal medulla cells on microbeads. , 1985, Analytical biochemistry.

[21]  A. G. Davidson.  Difference spectrophotometric assay of 1,2-diphenolic drugs in pharmaceutical formulations II: Germanium dioxide reagent. , 1984, Journal of pharmaceutical sciences.

[22]  M. F. Delaney,et al.  Determination of impurities in levodopa and carbidopa by high-performance liquid chromatography with electro- chemical detection , 1982 .

[23]  N. Weiss,et al.  Dünnschicht-scraper — ein halbautomatisches abschabgerät für fertigplatten , 1971 .