EVALUATION OF A DIETHANOLAMINE CHELATING RESIN USING 2-PHASE POTENTIOMETRY

被引：7

作者：

JARVIS, NV ^{[1
]}

WAGENER, JM ^{[1
]}

HANCOCK, RD ^{[1
]}

机构：

[1] UNIV WITWATERSRAND,DEPT CHEM,CTR MOLEC DESIGN,WITWATERSRAND 2050,SOUTH AFRICA

来源：

SOLVENT EXTRACTION AND ION EXCHANGE | 1995年 / 13卷 / 03期

关键词：

D O I：

10.1080/07366299508918293

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The synthesis of a polystyrene resin functionalised with diethanolamine is described. Protonation of the resin and complexation of Pb(II), Cd(II), Hg(II), UO22+, Fe(III), Ca(II) and Nd(III) were studied using two-phase potentiometry. From these experiments, apparent formation constants could be calculated and distribution curves obtained. Predictions as to metal ion separations were then possible. Batch experiments with Eu(III) and Pu(IV) were also performed as well as a column experiment for Pb(II) and Ca(II) to test selectivity. The resin shows selectivity towards metal ions that are large and/or have a good affinity for nitrogen donor ligands. Metal ions susceptible to hydrolysis are well complexed by the resin due to its ability to suppress hydrolysis.

引用

页码：591 / 611

页数：21

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