Highly efficient cooperative membrane transport of lead(II) ions by aza-18-crown-6 and palmitic acid

被引：30

作者：

Akhond, M

Shamsipur, M

机构：

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

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

来源：

SEPARATION SCIENCE AND TECHNOLOGY | 1997年 / 32卷 / 07期

关键词：

liquid membrane; cooperative lead transport; aza-18-crown-6; palmitic acid; pyrophosphate;

D O I：

10.1080/01496399708000957

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A chloroform membrane system containing a given mixture of aza-18-crown-6 and palmitic acid was applied for the uphill transport of Pb2+ ions. In the presence of P2O74- ion as a suitable metal ion acceptor in the receiving phase, the amount of lead ion transported across the liquid membrane after 100 minutes is 89.1 +/- 1.3%. The selectivity and efficiency of lead transport from aqueous solutions containing other cations such as Zn2+, Cu2+, Ni2+, Co2+, Fe2+, Pd2+, and Ag+ ions were investigated. In the presence of S2O32- ion as a proper masking agent in the source phase, the interfering effects of Cu2+ ion were diminished drastically.

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页码：1223 / 1232

页数：10

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