Ali A Ensafi, ME Amini, M Mazloum

Publication date: 1997/7

Journal name: INDIAN JOURNAL OF CHEMISTRY SECTION A

Volume: 36

Pages: 626-628

A kinetic spectrophotometric method for the determination of trace amounts of nitrite is
proposed based on the catalytic effect of nitrite on the oxidation of xylenol orange by
bromate in acidic media The reaction is followed spectrophotometrically by monitoring the
decrease in absorbance of xylenol orange at 430 nm with a fixed time of 0.5-4.0 minutes
from initiation of the reaction and at 30 degrees C. Nitrite can be determined in the range of
0.001-0.100 mu g/ml with limit of detection of 0.0003 mu g/ml. The relative standard ...