CONCENTRATION AND DETERMINATION OF TRACES OF METAL IONS

被引：27

作者：

SACHDEV, SL

WEST, PW

机构：

[1] Coates Chemical Laboratories, Louisiana State University, Baton Rouge

来源：

ANALYTICA CHIMICA ACTA | 1969年 / 44卷 / 02期

关键词：

D O I：

10.1016/S0003-2670(01)95803-9

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A procedure for the preconcentration and determination of Ag+, Cd2+, Co2+, Cu2+, Ni2+, Pb2+ and Zn2+ is presented. The conditions for the simultaneous extraction of all these metal ions with dithizone in ethyl propionate are described. The metal dithizonates are very stable in ethyl propionate and the chelate-solvent system enhances the sensitivity for the atomic absorption method used for the determination. With 10:1 aqueous-organic solvent ratios, the sensitivities for 1% absorption of the signal range from 0.001 μg/ml for Cd2+ and Zn2+, to 0.004 μg/ml for Pb2+. Interference effects of 38 diverse ions and compounds were studied and their tolerance levels are given. The resulting procedure is very sensitive and selective. © 1969.

引用

页码：301 / &

共 8 条

[1]

ALLEN JE, 1960, SPECTROCHIM ACTA, V17, P467

[2] DETERMINATION OF TRACE COPPER LEAD ZINC CADMIUM NICKEL AND IRON IN INDUSTRIAL WASTE WATERS BY ATOMIC ABSORPTION SPECTROMETRY AFTER ION EXCHANGE CONCENTRATION ON DOWEX A-1 [J].