SELECTIVE COMPLEXOMETRIC DETERMINATION OF MERCURY, USING THIOUREA AS MASKING AGENT

被引：37

作者：

SINGH, RP

机构：

来源：

TALANTA | 1969年 / 16卷 / 10期

关键词：

D O I：

10.1016/0039-9140(69)80190-6

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A method is described for selective complexometric determination of mercury, thiourea being used as masking agent. An excess of EDTA is added and the surplus EDTA is back-titrated with lead nitrate, with Xylenol Orange or Methylthymol Blue as indicator (pH 5-6). Thiourea is then added to decompose the mercury-EDTA complex and the liberated EDTA is again back-titrated with lead nitrate. The interference of various cations has been studied. © 1969.

引用

页码：1447 / &