Membranes for chemical sensors selective to doubly charged anions

被引：13

作者：

Smirnova, A ^{[1
]}

机构：

[1] St Petersburg State Univ, Dept Chem, St Petersburg 198904, Russia

来源：

FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY | 1998年 / 361卷 / 03期

关键词：

D O I：

10.1007/s002160050886

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The main results concerning selective properties fur carbonate sulfate and phosphate polyvinyl chloride (PVC) membranes based on neutral carriers and anion-exchangers are discussed. It is shown that for the investigated systems selectivity depends on the concentration ratio between anion-exchanger and neutral carrier. The shape of the curves (selectivity.vs. neutral carrier concentration) corresponds to a mathematical model described earlier and determines the stoichiometry of the complexes of the anions with neutral carrier. The incorporation of anionic sites inside the anion-selective membrane, e.g., carbonate-selective. leads to an increase of carbonate selectivity in presence of lipophilic anions of the internal solution.

引用

页码：296 / 300

页数：5

共 20 条

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