动力学分光光度法测定痕量锑——Sb(Ⅲ)—二甲基黄—过氧化氢体系

Kinetic-Spectrophotometric Determination of Trace Antimony(Ⅲ) in System of Sb(Ⅲ)-Dimethyl Yellow-H_2O_2

本文研究了在NaAc-HCl中痕量Sb(Ⅲ)加速H_2O_2氧化二甲基黄退色的指示反应及动力学条件,建立了动力学光度法测痕量Sb(Ⅲ)的新方法,检出限为6.5×10^(-10)g/ml。

Sb(Ⅲ) in NaAc-HCl can accelerate the decolorizing indicating reaction which results from the oxidation of dimethyl yellow by H_2O_2. The kinetic condition of reaction are studied A new high selective method for determination of trace Sb(Ⅲ) with a range of 0.10-0.45ug/25ml has been established. The detection limit is 6.5×10^(-10)g/ml.