Kinetic spectrophotometric determination of trace amounts of nitrite by its reaction with molybdosilicic acid blue

Abstract A new kinetic spectrophotometric method was developed to determine nitrite using molybdosilicic acid blue (MSAB) as a color reagent. This method is simple, rapid, sensitive and selective for the determination of trace amounts of nitrite ion. The reaction was monitored spectrophotometrically by measuring the decrease in absorbance of the reaction mixture at λ max =810 nm. The fixed time method was used. The limit of detection was 0.004 ppm. The relative standard deviations for the determination of 0.06 and 0.30 ppm of nitrite were 3.0% ( n =6) and 1.3% ( n =10), respectively. Two linear calibration graphs were observed (0.02–0.1 and 0.1–1.0 ppm). The method was applied to the determination of nitrite in well and waste waters.

[1]  K. Horita,et al.  Column Preconcentration Analysis–Spectrophotometric Determination of Nitrate and Nitrite by a Diazotization–Coupling Reaction , 1997 .

[2]  L. H. Mazo,et al.  Differential pulse voltammetric determination of nitrite with gold ultramicroelectrode , 1998 .

[3]  A. Jabbari,et al.  A sensitive flow-injection method for determination of trace amounts of nitrite. , 1998, Talanta.

[4]  D. Katsoulis.  A Survey of Applications of Polyoxometalates. , 1998, Chemical reviews.

[5]  L. G. Lopes,et al.  UV-visible spectrum of nitrous acid in solution: pKa determination and analytical applications , 1993 .

[6]  M. Mousavi,et al.  Determination Of SE(IV) in the Presence of SE(VI) at NG ML− Concentration Levels by a Kinetic Spectrophotometric Method , 1999 .

[7]  A. Ghiasvand,et al.  Flow injection spectrophotometric determination of trace amounts of selenium. , 1998, Talanta.

[8]  K. Horita,et al.  Spectrophotometric determination of nitrate and nitrite in water and some fruit samples using column preconcentration. , 1998, Talanta.

[9]  T. Shatova,et al.  Heteropoly anions as corrosion inhibitors for aluminium in high temperature water , 1994 .

[10]  A. Danet,et al.  Flow Injection Biamperometric Determination of Nitrite and Nitrate , 1998 .

[11]  A. Ensafi,et al.  Selective Kinetic Spectrophotometric Determination of Nitrite in Food and Water , 1994 .

[12]  A. Karami,et al.  Catalytic-spectrophotometric determination of trace amounts of molybdenum(VI) ion , 2000 .

[13]  S. Flamerz,et al.  Spectrophotometric method for the determination of trace levels of nitrite in waters , 1985 .

[14]  F. Mei,et al.  Sequential spectrophotometric determination of microgram amounts of nitrate and nitrite in mixtures , 1998 .

[15]  Jeng-Shong Shih,et al.  Organic ammonium ion selective electrodes based on 18-crown-6-phosphotungstic acid precipitates , 1996 .

[16]  S. Moncada,et al.  Nitric oxide: physiology, pathophysiology, and pharmacology. , 1991, Pharmacological reviews.

[17]  N. Howell Furman,et al.  Standard Methods of Chemical Analysis , 1962, Nature.

[18]  V. Mikulaj,et al.  Precipitation separation of strontium and calcium from acidic solutions using crown ether and tungstosilicic acid , 1994 .

[19]  Jinghe Yang,et al.  Fluorimetric Determination of Nitrite Using a New Reagent System , 1994 .

[20]  Mir Fazlollah Mousavi,et al.  Spectrophotometric Determination of Trace Amounts of Sulfide Ion Based on Its Catalytic Reduction Reaction with Methylene Blue in the Presence of Te(IV) , 1997 .