SUPPORTED LIQUID MEMBRANE FOR ANALYTICAL SEPARATION OF TRANSITION-METAL IONS .2. APPRAISAL OF LIPOPHILIC 1,10-DIDECYL-1,10-DIAZA-18-CROWN-6 AS METAL-ION CARRIER IN THE MEMBRANE

被引：30

作者：

PARTHASARATHY, N

BUFFLE, J

机构：

[1] Department of Inorganic, Analytical and Applied Chemistry, University of Geneva, Geneva

来源：

ANALYTICA CHIMICA ACTA | 1991年 / 254卷 / 1-2期

关键词：

COMPLEXATION; COPPER; CROWN ETHERS; DIDECYLAZA-18-CROWN-6; EXTRACTION; LIQUID MEMBRANE; TRANSITION METALS;

D O I：

10.1016/0003-2670(91)90003-N

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The use of lipophilic 1,10-didecyl-1,10-diaza-18-crown-6 in a supported liquid membrane for the separation of transition metal ions, particularly copper ions under natural aquatic conditions, was evaluated. The effect of parameters such as carrier concentration, source phase pH and the nature of the ligands used in the strip phase on the transport of copper ions was studied. Among the ligands tested in the strip phase, sodium pyrophosphate (pH > 6) was found to be the best stripping agent as pyrophosphate ions were not transported across the membrane whereas other potentially good metal ion stripping ligands were transported.

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页码：9 / 19

页数：11

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