Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/28178
Title: Kinetics of o-benzoquinone mediated oxidation of glucose by glucose oxidase at edge plane pyrolytic graphite electrode
Authors: Hui, TW
Wong, KY 
Shiu, KK
Keywords: Glucose oxidase
Kinetics
Mediators
o-Benzoquinone
Issue Date: 1996
Publisher: Wiley-VCH
Source: Electroanalysis, 1996, v. 8, no. 6, p. 597-601 How to cite?
Journal: Electroanalysis 
Abstract: The kinetic constants for the electrocatalytic oxidation of β-D-glucose by glucose oxidase in the presence of o- and p-benzoquinone as electron mediators have been evaluated by cyclic voltammetry in pH 6-8. The rate constants for the reductive half-reaction (reduction of glucose oxidase by β-D-glucose), kred, the oxidative half-reaction (oxidation of glucose oxidase by the mediator), kox and the maximum turnover number for glucose oxidase, ko, have been obtained. kox was found to depend on the pH of the medium. At pH 7.0, Aox for o-benzoquinone and p-benzoquinone are 6.0 × 106 and 4.7 × 105 mol-1 dm3 s-1, respectively. o-Benzoquinone appears to be a more effective electron transfer mediator than p-benzoquinone.
URI: http://hdl.handle.net/10397/28178
ISSN: 1040-0397
EISSN: 1521-4109
DOI: 10.1002/elan.1140080618
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