An assessment of mediators as oxidants for glucose oxidase in the presence of oxygen

Amperometric enzyme electrodes often employ a redox mediator to act as an electron shuttle between the enzyme and the electrode. In this study we discuss the influence of oxygen on the current response mediated either by a ferrocene derivative or by diaminodurene (DAD), a novel mediator for glucose...

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Bibliographic Details
Published in:Biosensors & bioelectronics 1995, Vol.10 (3), p.393-403
Main Authors: Martens, Nicolas, Hindle, Alistair, Hall, Elizabeth A.H.
Format: Article
Language:English
Subjects:
amperometric electrodes coupled enzyme reactions
Biological and medical sciences
Biosensors
Biotechnology
Enzyme mediators
Fundamental and applied biological sciences. Psychology
Methods. Procedures. Technologies
Various methods and equipments
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Summary:Amperometric enzyme electrodes often employ a redox mediator to act as an electron shuttle between the enzyme and the electrode. In this study we discuss the influence of oxygen on the current response mediated either by a ferrocene derivative or by diaminodurene (DAD), a novel mediator for glucose oxidase electrodes. A reaction model, which describes an enzyme reoxidation competition between oxygen and the mediator, is investigated and a model which excludes concentration polarisation in the enzyme layer is eliminated.
ISSN:0956-5663
1873-4235
DOI:10.1016/0956-5663(95)96857-U