RecordNumber
106
Doc. No.
224A
Call. No.
224A
Author
Ensafi, ali A.,Rezall, B
Title of Article
Kineric-spectrophotometric determination of nitrite by its catalytic effect on the oxidation of brillian cresyl blue by bromate
Title Of Periodical
MICROCHEMICAL JOURNAL
VolumNumber
No.50
Date
(1994)
Page
P.169-177
Descriptors
Nitrite,Catalytic,Brilliant cresyl blue
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 is mostly free of interferences. The fixed-time method was used for the determination of nitrite in matural waters, sausage, and salt.
Indexer
1376/12
IndexDate
Shahsavary
اطلاعات ثبت
GN107609