A cobalt(II)-selective PVC membrane based on a Schiff base complex of N,N′-bis(salicylidene)-3,4-diaminotoluene

被引：352

作者：

Gupta, VK ^{[1
]}

Singh, AK ^{[1
]}

Mehtab, S ^{[1
]}

Gupta, B ^{[1
]}

机构：

[1] Indian Inst Technol, Dept Chem, Roorkee 247667, Uttar Pradesh, India

来源：

ANALYTICA CHIMICA ACTA | 2006年 / 566卷 / 01期

关键词：

cobalt-selective electrode; PVC membrane electrodes; Schiff base and potentiometric sensors;

D O I：

10.1016/j.aca.2006.02.038

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A new PVC membrane electrode for Co2+ based on N,N'-bis(salicylidene)-3,4-diaminotoluene, an excellent neutral carrier, has been fabricated using sodium tetraphenylborate (NaTPB) as an anionic excluder and dioctylphthalte (DOP) as a solvent mediator. The electrode exhibits a linear potential response in the concentration range of 7.9 x 10(-8) to 1.0 x 10(-1) M with a slope of 30 +/- 0.2 mV per decade. The detection limit of the proposed sensor is 5.0 x 10(-8) M and it can be used over a period of 5 months. The proposed sensor revealed good selectivity over a wide variety of other cations including alkali, alkaline earth, heavy and transition metals and could be used in the pH range of 2.0-9.0. This electrode was successfully applied for the determination of Co2+ in real samples and as an indicator electrode in potentiometric titration of cobalt ions. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：5 / 10

页数：6

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