SELECTIVE UPTAKE OF TOXIC ELEMENTS BY AN AMORPHOUS TITANIUM-DIOXIDE ION-EXCHANGER

被引：14

作者：

TSUJI, M

ABE, M

机构：

[1] Department of Chemistry, Faculty of Science, Tokyo Institute of Technology, Tokyo, 152, 2-12-1, O-okayama, Meguro-ku

来源：

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY-ARTICLES | 1991年 / 149卷 / 01期

关键词：

D O I：

10.1007/BF02053718

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The ion-exchange selectivities for oxoanions of some toxic elements and halogens were studied on an amorphous hydrous titanium dioxide (Am-HTDO) as a function of OH- and anion concentrations in chloride and nitrate media. The adsorption isotherm was of the Langmuir type. The selectivity sequence increased in the order of ClO3- < BrO3- < IO3- << SeO3(2-) < TeO3(2-) < As(OH)4-. IO3- was efficiently separated from ClO3- and BrO3-. As(OH)4- and SeO3(2-) were selectively separated from seawater. Such high selectivity of Am-HTDO may provide a new concentration technique of these toxic elements in environmental materials.

引用

页码：109 / 118

页数：10

共 25 条

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