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Kinetic-spectrophotometric determination of nitrite by its catalytic effect on the oxidation of Brilliant Cresyl Blue by bromate

Authors: Ali A Ensafi, B Rezaii
Publication date: 1994/10/31
Journal name: Microchemical journal
Volume: 50
Pages: 169-177
Publisher: Elsevier
 
Abstract A kinetic-spectrophotometric method for the determination of ultratrace amounts of
nitrite is described. It is based on the catalytic action of this anion on the oxidation of Brilliant
Cresyl Blue by bromate, which yields a colorless product in acidic media. The reaction is
followed spectrophotometrically by measuring the change in absorbance at 595 nm and 30
C. Nitrite in the range of 0.5-1000 ng/ml can be determined in the presence of large amounts
of nitrate and ammonium ions. The limit of detection is 0.10 ng/ml. The proposed method ...

 

Journal Papers
Month/Season: 
October
Year: 
1994

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