Preparation of a tellurium ion-selective membrane electrode using an anion-exchange resin and its application to chemical analysis of industrial materials

被引：1

作者：

Yoshikuni, N ^{[1
]}

Nishiumi, S ^{[1
]}

Oguma, K ^{[1
]}

机构：

[1] Chiba Univ, Fac Engn, Dept Mat Technol, Inage Ku, Chiba 2638522, Japan

来源：

BUNSEKI KAGAKU | 2000年 / 49卷 / 10期

关键词：

tellurium; ion selective electrode; anion-exchange resin; bismuth telluride; cadmium telluride;

D O I：

10.2116/bunsekikagaku.49.791

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The preparation and application of a coated-graphite tellurium(IV) ion-selective electrode, based on the TeCl62- form anion-exchange resin fixed in a poly(vinyl chloride) matrix, are described. The effects of the hydrochloric acid concentration and interference ions were investigated. The electrode showed a near-Nernstian slope of 30 +/- 2 mV/decade over a tellurium(IV) ion concentration range of 3 x 10(-4) - 10(-2) mol dm(-3) and a response time of 30 s in 6 mol dm(-3) hydrochloric acid solution. Na+, K+ and Ca2+. do not interfere, but other ions, such as Bi3+, Cd2+, Fe3+, Ga3+, Sb3+,ClO4-, PO43- and SO42-, cause interference. The electrode has been successfully used to determine tellurium in Bi2Te3 and CdTe after the separation of tellurium from bismuth or cadmium by the hydroxide precipitation method in the presence of EDTA as a masking reagent for bismuth and cadmium.

引用

页码：791 / 794

页数：4

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