A polypyrrole-coated, piezoelectric sensor for CrVI.: Preliminary results

被引：11

作者：

Desimoni, E ^{[1
]}

Bassani, I ^{[1
]}

机构：

[1] Univ Milan, DIFCA, I-20133 Milan, Italy

来源：

ANALYTICAL COMMUNICATIONS | 1999年 / 36卷 / 02期

关键词：

D O I：

10.1039/a809667h

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The piezoresonators of a quartz-crystal microbalance mere surface-coated with electropolymerised polypyrrole films. After potentiostatic reduction at -0.9 V, the reduced PPy-coated resonators were allowed to react with solutions containing different concentrations of Cr-VI. Mass changes of the polymer film, originated by ionic transfer during the oxidation reaction of PPy by hexavalent chromium, produced frequency shifts proportional to the concentration of Cr-VI. Also, frequency shifts were obtained by reaction of some antioxidants at oxidised PPy-coated resonators. The observed responses depend on several experimental parameters.

引用

页码：45 / 46

页数：2

共 13 条

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