DETERMINATION OF SELENIUM AND TELLURIUM IN ELECTROLYTIC COPPER BY ANODIC-STRIPPING VOLTAMMETRY AT A GOLD FILM ELECTRODE

被引：50
作者：
HAMILTON, TW [1 ]
ELLIS, J [1 ]
FLORENCE, TM [1 ]
机构：
[1] AUSTRALIAN ATOM ENERGY COMMISS RES ESTAB,ANALYT CHEM SECT,LUCAS HTS 2234,NEW S WALES,AUSTRALIA
来源：
ANALYTICA CHIMICA ACTA | 1979年 / 110卷 / 01期
关键词：
D O I：
10.1016/S0003-2670(01)83533-9
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A simple procedure for the determination of selenium and tellurium in electrolytic copper is described. These two elements are first separated from copper by passing an ammoniacal solution of the sample through Chelex-100 resin. Voltammetric interferences from nitrite liberated during the dissolution of the metal sample in nitric acid and from arsenic and antimony present in the metal are eliminated by addition of hydrogen peroxide. Excess of peroxide is quickly decomposed by the copper(II) ions present. As little as 0.01 μg Se g-1 and 0.02 μg Te g-1 can be determined; relative standard deviations (n = 5) are in the ranges 1.4-3.7% for selenium concentrations of 7.3-0.6 ppm in copper and 1.6-3.1% for tellurium concentrations of 4.6-0.5 ppm. © 1979.
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页码：87 / 94
页数：8
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