Specific uphill transport of Cd2+ ion by a cooperative carrier composed of aza-18-crown-6 and palmitic acid

被引：59

作者：

Akhond, M

Shamsipur, M

机构：

[1] RAZI UNIV,DEPT CHEM,KERMANSHAH,IRAN

[2] SHIRAZ UNIV,DEPT CHEM,SHIRAZ,IRAN

来源：

JOURNAL OF MEMBRANE SCIENCE | 1996年 / 117卷 / 1-2期

关键词：

liquid membranes; cadmium transport; Aza-18-crown-6; palmitic acid; thiosulfate;

D O I：

10.1016/0376-7388(96)00062-2

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A given mixture of aza-18-crown-6 and palmitic acid was found to be an excellent cooperative carrier for the specific uphill transport of cadmium ions through a chloroform membrane. In the presence of thiosulfate ion as a suitable metal ion acceptor in the receiving phase, the amount of Cd2+ ion transported across the liquid membrane after 80 min is 93.9 +/- 1.0%. The selectivity and efficiency of cadmium transport from aqueous solutions containing other cations such as Fe3+, Co2+, Ni2+ Cu2+, Zn2+, Pb2+, Ag+ as well as alkali and alkaline earth cations were investigated. In the presence of thiocyanate, as a proper masking agent in the source phase, the interfering effects of Cu2+ and Ag+ ions were successfully eliminated.

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页码：221 / 226

页数：6

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