Novel PVC-based membrane sensors selective for vanadyl ions

被引：29

作者：

Jain, AK ^{[1
]}

Gupta, VK ^{[1
]}

Singh, LP ^{[1
]}

Khurana, U ^{[1
]}

机构：

[1] Univ Roorkee, Dept Chem, Roorkee 247667, Uttar Pradesh, India

来源：

TALANTA | 1998年 / 46卷 / 06期

关键词：

di-(2-ethylhexyl)phosphoric acid; dibutyl(butyl)phosphonate; VO2+-selective sensors;

D O I：

10.1016/S0039-9140(98)00016-2

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Poly(vinyl chloride) based membranes of di-(2-ethylhexyl)phosphoric acid (DEHPA) and dibutyl(-butyl)phosphonate (DBBP) have been prepared and investigated as VO2+-selective sensors. The membranes containing DEHPA/DBBP and sodium tetraphenylborate, an anion excluder, show near-Nernstian/Nernstian response in the concentration range similar to 10(-5)-10(-1) M. The sensors exhibit a fast response time and good selectivity for VO2+ over a number of other cations. Quantitative determination of vanadium in waste V2O5 catalyst has been achieved by these sensors and they have also been used as indicator electrodes for the determination of the end point in the potentiometric titration of VO2+ against EDTA. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：1453 / 1460

页数：8

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