Evaluation of a mechanically immobilized nickel hexacyanoferrate electrode as an amperometric sensor for thiosulfate determination

被引：15

作者：

Shankaran, DR ^{[1
]}

Narayanan, SS ^{[1
]}

机构：

[1] Univ Madras, Dept Analyt Chem, Madras 600025, Tamil Nadu, India

来源：

FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY | 1999年 / 365卷 / 08期

关键词：

D O I：

10.1007/s002160051542

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A nickel hexacyanoferrate modified electrode was constructed by mechanical immobilization. A reversible peak with midpoint potential of 0.38 V was observed in cyclic voltammetry with 0.1 M NaNO3. Electrocatalytic oxidation of thiosulfate was effective on the modified electrode at a significantly reduced overpotential of 0.5 V and at broad pH range. The modified electrode can be used for the determination of thiosulfate in the concentration range of 7.0 x 10(-4) to 5.6 x 10(-3) M. It has been used for the amperometric determination of thiosulfate in photographic effluents. The results obtained were in good agreement with those obtained by other methods.

引用

页码：663 / 665

页数：3

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