Polypyrrole based aroma sensor

被引：31

作者：

de Souza, JEG

Neto, BB

dos Santos, FL

de Melo, CP ^{[1
]}

Santos, MS

Ludermir, TB

机构：

[1] Univ Fed Pernambuco, Dept Fis, BR-50670901 Recife, PE, Brazil

[2] Univ Fed Pernambuco, Dept Quim Fundamental, BR-50670901 Recife, PE, Brazil

[3] Univ Fed Pernambuco, Dept Informat, BR-50670901 Recife, PE, Brazil

[4] Univ Catolica Pernambuco, Dept Quim, Recife, PE, Brazil

来源：

SYNTHETIC METALS | 1999年 / 102卷 / 1-3期

关键词：

electrochemical polymerization; polypyrrole and derivatives; gas sensors;

D O I：

10.1016/S0379-6779(98)00386-5

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The change in conductivity of conducting polymers when exposed to volatile gases can be exploited for the construction of aroma sensors. In this communication we report the preliminary tests of two versions of an aroma sensor based on arrays of doped polypyrrole films. We have used these prototypes for the identification of simple organic vapors and complex aromas; The input signal was the fractional change in the resistance of the films and the data acquisition was performed automatically. The pattern recognition process was implemented by a multivariate analysis and by neural network processing. The discriminating power among different odorants was better than 90%.

引用

页码：1296 / 1299

页数：4

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