A voltammetric electronic tongue made of modified epoxy-graphite electrodes for the qualitative analysis of wine

被引：4

作者：

Juan Manuel Gutiérrez

Laura Moreno-Barón

Maria Isabel Pividori

Salvador Alegret

Manel del Valle

机构：

[1] Universitat Autònoma de Barcelona,Sensors and Biosensors Group, Department of Chemistry

来源：

Microchimica Acta | 2010年 / 169卷

关键词：

Voltammetric sensor; Electronic tongue; Wine analysis; Principal component analysis; Artificial neural networks;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

First results are presented of a new voltammetric electronic tongue which employs modified epoxy-graphite electrodes. This analytical tool has been applied to qualitative wine analysis, performing the classification of wine varieties, as well as recognition of the oxygenation effect. In the same way, studies related to the detection of some defects in wine production were also assessed, such as its vinegary taste in open-air contact or the use of excess sulphite preservative. The electronic tongue was formed by five voltammetric electrodes, four of them being bulk-modified with different substances: copper and platinum nanoparticles on one side, and polyaniline and polypyrrole powder on the other. The responses were preprocessed employing Principal Component Analysis (PCA) to visualize and identify distinct episodes. The resulting PCA scores were modelled with an artificial neural network that accomplishes final prediction with the qualitative classification of wines and/or detection of defects.

引用

页码：261 / 268

页数：7

共 191 条

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