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Selective Determination of Uric Acid in Presence of Ascorbic Acid and Dopamine at Neutral pH Using Exfoliated Graphite Electrodes

Ramesh, P and Sampath, S (2004) Selective Determination of Uric Acid in Presence of Ascorbic Acid and Dopamine at Neutral pH Using Exfoliated Graphite Electrodes. In: Electroanalysis, 16 (10). pp. 866-869.

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Abstract

Exfoliated graphite electrodes have been used to detect uric acid at neutral pHs, by following its oxidation. A linear range of 5-53 \mu M and a detection limit of 5 \mu M are observed at a pH of 7.0. Uric acid was found to be selectively adsorbed on exfoliated graphite surface in the presence of excess ascorbic acid. This leads to its selective determination in the presence of ascorbic acid. Simultaneous detection of uric acid, dopamine and ascorbic acid has also been demonstrated on exfoliated graphite electrodes in a pH 7 buffer.

Item Type: Journal Article
Additional Information: The copyright belongs to WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Keywords: exfoliated graphite;binderless electrodes;uric acid;ascorbic acid;dopamine
Department/Centre: Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited: 24 Nov 2005
Last Modified: 19 Sep 2010 04:21
URI: http://eprints.iisc.ernet.in/id/eprint/4057

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