PVC-based bis(2-nitrophenyl)disulfide sensor for zinc ions

被引：39

作者：

Gholivand, MB ^{[1
]}

Mozaffari, Y ^{[1
]}

机构：

[1] Razi Univ, Dept Chem, Fac Sci, Kermanshah, Iran

来源：

TALANTA | 2003年 / 59卷 / 02期

关键词：

ion-selective electrode; bis(2-nitrophenyl)disulfide; zinc (II) sensor; potentiometry;

D O I：

10.1016/S0039-9140(02)00528-3

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A PVC membrane electrode based on bis(2-nitrophenyl)disulfide carrier exhibits a very good response for Zn2+ in a wide concentration range (from 2.9 x 10(-7) to 3.2 x 10(-2) Mol l(-1)) with a slope of 29.9 +/- 0.4 mV per decade of Zn2+ concentration. The response time of the sensor is about 10 s and the membrane can be used for more than 3 months without any observed divergence in potentials. The proposed sensor exhibits very good selectivity for Zn2+ over many cations and can be used in a wide pH range (2-9). This assembly served also as an indicator electrode in potentiometric titrations involving zinc ions and direct potentiometric determination of zinc ions in real and synthetic samples. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：399 / 407

页数：9

共 37 条

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BRZOZKA Z, 1988, ANALYST, V113, P1803

[2] COMPARATIVE-STUDY OF THE SELECTIVITIES OF MEMBRANES BASED ON CYCLIC-CHAIN AND OPEN-CHAIN THIOETHERS [J].