Abstract
A kinetic spectrophotometeric method for the determination of trace amounts of nitrite (0.2-1.0) mu g/ml has been proposed based on its catalytic effect on the reaction between potassium bromate and bromopyrogallol red in acidic medium. The reaction is monitored spectrophotometrically by appearance of band at 348 nm with respect to blank by fixed time method (15 min). The method has been applied for quantitative determination of nitrite in water samples with coefficient of variation (C.V) within 4.2% (n=3).