Inhibitory spectrophotometric determination of microamounts of thiosulfate based on the oxidizing discoloration reaction between crystal violet and hydrogen peroxide

被引：0

作者：

Rao, ZM ^{[1
]}

Huang, SP ^{[1
]}

Zhang, SQ ^{[1
]}

机构：

[1] Zhangzhou Teachers Coll, Dept Chem, Zhangzhou 363000, Peoples R China

来源：

CHINESE JOURNAL OF ANALYTICAL CHEMISTRY | 2004年 / 32卷 / 08期

关键词：

thiosulfate; crystal violet; hydrogen peroxide; discoloration reaction; spectrophotometry;

D O I：

暂无

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A new inhibitory spectrophotometric determination of trace thiosulfate has been developed. It is based on the Oxidizing discoloration reaction between crystal violet and hydrogen peroxide on heating and in the medium of pH=5.0-6.0. Beers law is obeyed in the range of 4.5x10(-5) to 4.5x10(-4) g/L and the detection limit for S2O32- is 3.2x10(-6) g/L. The method has been applied to the determination of S2O32- in the wasted fixing solution with satisfactory result.

引用

页码：1090 / 1092

页数：3