ELECTROCHEMICAL REACTION CHARACTERISTICS OF HALIDE-HALATE-ACID SYSTEMS FOR AMPEROMETRIC DETECTION OF ACID

被引：1

作者：

TAKAHASHI, K ^{[1
]}

TAKEI, F ^{[1
]}

ISHIJI, T ^{[1
]}

机构：

[1] RIKEN KEIKI CO LTD,ITABASHI KU,IBARAKI,OSAKA 174,JAPAN

来源：

DENKI KAGAKU | 1995年 / 63卷 / 10期

关键词：

ACID SENSITIVE CATHODIC REACTIONS; POLAROGRAPHY; HALATES; IODINE LIBERATION;

D O I：

10.5796/kogyobutsurikagaku.63.920

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Acid sensitive cathodic reactions in halate and halide-halate solutions were investigated by polarography to characterize the reactions for an amperometric acidic-gas sensing. The polarographic limiting current, I-d, is proportional to the amount of added acid into bromate and iodate solutions, which is attributed to the electrode reaction of XO(3)(-) + 6H(+) + 6e(-) --> X(-) + 3H(2)O (X=Br or I), whose current is controlled by diffusion of the hydrogen ions. Iodine is liberated from KI + KIO3 solutions with addition of acid. The reduction current of the iodine showed good linearity to the amount of added acid. The effect of alkaline additive in KI + KIO3 solutions on the liberation of iodine was discussed as competitive reactions between the neutralization and the iodine liberation.

引用

页码：920 / 926

页数：7

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