Polymeric membrane silver-ion selective electrodes based on bis(dialkyldithiophosphates)

被引：48

作者：

Liu, D

Liu, JH

Tian, DY

Hong, WL

Zhou, XM

Yu, JC ^{[1
]}

机构：

[1] Chinese Univ Hong Kong, Dept Chem, Hong Kong, Hong Kong, Peoples R China

[2] Shenzhen Univ, Dept Chem & Biol Educ, Shenzhen 518060, Peoples R China

来源：

ANALYTICA CHIMICA ACTA | 2000年 / 416卷 / 02期

关键词：

bis(dialkyldithiophosphates); ionophores; PVC membrane; silver-ion selective electrode;

D O I：

10.1016/S0003-2670(00)00902-8

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Poly(vinyl chloride) (PVC) membrane electrodes based on bis(dialkyldithiophosphates) carriers were prepared and tested for selective detection of silver ions. A suitable lipophilicity of the carrier and appropriate co-ordination ability were found to be essential for designing an electrode with good response characteristics. A PVC membrane with 5% bis(diethyldithiophosphates) ionophore and 65% o-NPOE plasticizer satisfies these requirements. This electrode exhibits linear response over a concentration range of 10(-1)-10(-6) mol l(-1) Ag+ with a slope of 57.3 mV/dec. This is a fast and simple analytical method, and it has been applied successfully in the determination of silver ions in electroplating wastewater. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：139 / 144

页数：6

共 33 条

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