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ERIC Number: EJ824936
Record Type: Journal
Publication Date: 2008-Jan
Pages: 2
Abstractor: As Provided
Reference Count: 13
ISSN: ISSN-0021-9584
Electroanalytical and Spectroscopic Studies of Poly(2,2'-bithiophene)-Modified Platinum Electrode to Detect Catechol in the Presence of Ascorbic Acid
Lunsford, Suzanne K.; Speelman, Nicole; Stinson, Jelynn; Yeary, Amber; Choi, Hyeok; Widera, Justyna; Dionysiou, Dionysios D.
Journal of Chemical Education, v85 n1 p128-129 Jan 2008
This article describes an undergraduate laboratory for an instrumental analysis course that integrates electroanalytical chemistry and infrared spectroscopy. Modified electrode surfaces are prepared by constant potentiometric electrolysis over the potential range of 1.5-1.8 V and analyzed by cyclic voltammetry and infrared spectroscopy. The students learned how to prepare a poly(2,2'-bithiophene)-modified platinum sensor electrode for the detection of catechol in the presence of ascorbic acid. The peak separation in the cyclic voltammograms and the shifts of the IR peaks are used to assess the quality of the modified electrode. (Contains 1 figure and 2 tables.)
Division of Chemical Education of the American Chemical Society. Subscription Department, P.O. Box 1267, Bellmawr, NJ 08099-1267. Tel: 800-691-9846; Tel: 856-931-5825; Fax: 856-931-4115; e-mail:; Web site:
Publication Type: Journal Articles; Reports - Descriptive
Education Level: Higher Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A