Spectrophotometric determination of trace chromium (VI) with dibromomethyl carboxyazo

被引：0

作者：

Yu, JH ^{[1
]}

Zuo, XT ^{[1
]}

Wang, YL ^{[1
]}

机构：

[1] Shandong Bldg Mat Inst, Dept Appl Chem, Jinan 250022, Peoples R China

来源：

CHINESE JOURNAL OF ANALYTICAL CHEMISTRY | 2001年 / 29卷 / 10期

关键词：

spectrophotometry; fading reaction; chromium(VI); dibromomethyl carboxyazo;

D O I：

暂无

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The fading reaction of dibromomethyl carboxyazo with Cr2O72- was studied. In the medium of nitric acid, the reaction has high sensibility. The Beer's law is obeyed in the range of 0 similar to 160 mug/L Cr(VI), and the molar absorptivity of reaction is 1.2 x 10(5) L.mol(-1).cm(-1). The method has been used for determining trace chromium in alloy steel and water.

引用

页码：1199 / 1201

页数：3