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The Chemical Educator

ISSN: 1430-4171 (electronic version)

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Abstract Volume 10 Issue 1 (2004) pp 10-14

Electrochemistry and Detection of Catechol at a Conducting Poly(3-methylthiophene) Electrode in the presence of a Common Interferent, Ascorbic Acid

Suzanne K. Lunsford*, and Hong Zhang

Department of Chemistry, Wright State University, Dayton, Ohio 45435, and Advanced Testing Laboratory, Cincinnati, Ohio 45242
Received April 9, 2004. Accepted November 15, 2004.

Published online: 7 January 2005

Abstract. This paper describes an undergraduate laboratory for an electroanalytical chemistry course that can be used to supplement the teaching of oxidation and reduction reactions. The laboratory also introduces basic electrochemical techniques, instrumentation, and the preparation of a conducting polymer film, poly(3-methylthiophene), as a chemical sensor for the detection of catechol in the presence of a common interferent, ascorbic acid.

Key Words: In the Classroom; analytical chemistry; electrochemistry, ascorbic acid

(*) Corresponding author. (E-mail:

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Issue date: February 1, 2005

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