STUDY OF CATHODIC STRIPPING OF COPPER IN HYDROCHLORIC-ACID MEDIUM - SIMULTANEOUS DETERMINATION OF CADMIUM, LEAD AND COPPER BY COMBINED ANODIC AND CATHODIC STRIPPING VOLTAMMETRY

被引：6
|
作者：
NEDELTCHEVA, T
COSTADINNOVA, L
ATHANASSOVA, M
机构：
[1] Department of Analytical Chemistry, Higher Institute of Chemical Technology, Sofia, 1756
来源：
ANALYTICA CHIMICA ACTA | 1994年 / 291卷 / 1-2期
关键词：
STRIPPING VOLTAMMETRY; CADMIUM; COPPER; LEAD;
D O I：
10.1016/0003-2670(94)85128-X
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
The copper cathodic stripping peak obtained in hydrochloric acid medium by fast differential-pulse potential scanning in the negative direction was studied. Conditions for the simultaneous determination of Pb, Cd and Cu by combined stripping voltammetry (anodic for Pb and Cd and cathodic for Cu) were found; copper was actually determined by adsorptive voltammetry. Samples of CaHPO4 and CaCO3 were analysed by the proposed method and the relative standard deviation for 10(-5)-10(-4)% metal contents was about 8%. The accuracy of the results was confirmed by extraction flame atomic absorption spectrometry.
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页码：75 / 80
页数：6
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