Conductometric transducing in electrocatalytical sensors: Detection of ascorbic acid

被引：25

作者：

Ivanov, Svetlozar ^{[1
]}

Tsakova, Vessela ^{[1
]}

Mirsky, Vladimir M. ^{[2
]}

机构：

[1] Institute of Physical Chemistry, Bulgarian Academy of Sciences

[2] Institute of Analytical Chemistry, Chemo- and Biosensors, University of Regensburg, 93040 Regensburg

来源：

Electrochemistry Communications | 2006年 / 8卷 / 04期

关键词：

Ascorbic acid; Chemical sensor; Conductometric sensor; Electroactive polymers; Electrocatalytical sensor; Poly-ortho-methoxyaniline; Polyaniline;

D O I：

10.1016/j.elecom.2006.02.006

中图分类号：

学科分类号：

摘要：

Conductometric transducing is suggested for electrocatalytic chemical sensors based on conductive polymers. Lateral conductivity of the polymer layers was measured by two- and four-point techniques. The approach was applied for electroanalytical detection of ascorbic acid on the electrocatalytically active polyaniline and poly-ortho-methoxyaniline electrodes. Both polymers displayed a monotonous concentration dependence of their conductance in the analytically important sub-millimolar concentration range of ascorbic acid. The approach was tested in model solutions of ascorbic acid in buffer and applied for detection of ascorbic acid in orange juice. © 2006 Elsevier B.V. All rights reserved.

引用

页码：643 / 646

页数：3

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