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USE OF OVEROXIDIZED POLYPYRROLE AS A CHROMIUM(VI) SENSOR

被引：23
作者：
GE, H
ZHANG, J
WALLACE, GG
机构：
[1] Chemistry Department, The University of Wollongong, Wollongong NSW 2500
来源：
ANALYTICAL LETTERS | 1992年 / 25卷 / 03期
关键词：
CR(VI) SENSOR; OVEROXIDIZED POLYPYRROLE; PRECONCENTRATION;
D O I：
10.1080/00032719208016106
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A new Cr(VI) sensor has been developed in this work. The sensor was prepared by coating a layer of polypyrrole on a gold electrode and then oxidising the polymer film by scanning to anodic potentials. This pretreatment procedure decreased the background current usually associated with the electroactivity of the polymer. Determination of Cr(VI) using this sensor was investigated. It was found that Cr(VI) was preconcentrated upon application of an anodic potential (+ 0.80 V). Detection limits of the order of 10 ppb Cr(VI) were obtained.
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页码：429 / 441
页数：13
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