An exact constant-potential coulometric method for determination of mercury in Hg-Ba-Cu-O high-temperature superconductors

被引：0

作者：

Denisova, AE ^{[1
]}

Kabanova, OL ^{[1
]}

机构：

[1] Russian Acad Sci, VI Vernadskii Inst Geochem & Analyt Chem, Moscow, Russia

来源：

INDUSTRIAL LABORATORY | 2000年 / 66卷 / 11期

关键词：

D O I：

10.1023/A:1017517528074

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

A coulometric method for determination of Hg(II) in the range of 6 - 30 mi: in 0.1-M HNO3 background solution at a constant potential of 0.2 V in the presence of a 14-fold molar excess of copper and 6-fold molar excess of barium on the working electrode (TMP-l-grade graphite cloth) is described. A technique to account for the effect of copper(II) ions on analysis results is proposed. The method is tested on model solutions with an error of determination not in excess of 0.2% (S-r = 0.001) and on Hg-Ba-Cu-O high-temperature superconductor specimens (with s(r) not in excess of 0.002).

引用

页码：714 / 717

页数：4