Selenite-selective membrane electrodes based on ion exchangers and application to anodic slime

被引：12

作者：

Ekmekçi, G ^{[1
]}

Somer, G ^{[1
]}

机构：

[1] Gazi Univ, Fen Edebiyat Fak, TR-06500 Ankara, Turkey

来源：

ANALYTICAL SCIENCES | 2000年 / 16卷 / 03期

关键词：

D O I：

10.2116/analsci.16.307

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A new membrane selenite selective electrode has been developed. The electrode consisted of 4% ion exchanger, QAD 86 PI (dialkyldimethylammonium chloride), as the active material, and 96% SR as the membrane matrix. An analytically useful potential change occurs from 10(-6) - 10(-1) M selenite ion. The slope of the linear portion is 19 mV/10 fold change in selenite concentration. No interference was observed for SO42-, SO32-, S-2, HPO42-, Cl-, Br- and I- ions. The lifetime of the electrode was about three months. This electrode has been used for the determination of selenium in anodic slime at pH 8 (ammonia buffer) using standard addition method.

引用

收藏

页码：307 / 311

页数：5

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