Chemically modified sensor for amperometric determination of sulphur dioxide

被引：0

作者：

Shankaran, DR ^{[1
]}

Narayanan, SS ^{[1
]}

机构：

[1] Univ Madras, Sch Chem Sci, Dept Analyt Chem, Chennai 600025, India

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 1999年 / 55卷 / 2-3期

关键词：

modified electrode; copper hexacyanoferrate; electrocatalysis; sulphur dioxide;

D O I：

暂无

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Copper hexacyanoferrate (CuHCF) modified graphite electrode prepared by mechanical immobilisation method has been used for the amperometric determination of sulphite, which can be extended for the determination of SO2 in air after absorbing the pollutant in sodium hydroxide solution. This method is based upon the electrocatalytic oxidation of sulphite by the modified electrode. The pH of the medium for oxidation should be in the range of 3.5-8.0. The range of determination of SO2 is from 5.1 to 30.7 ppm. The presence of H2S with SO2 will interfere in the determination. This can be eliminated by precipitating H2S as CuS. (C) 1999 Elsevier Science S.A. All rights reserved.

引用

页码：191 / 194

页数：4

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