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AN AMPEROMETRIC GLUCOSE BIOSENSOR INCORPORATING A PERMEABLE PRE-OXIDATION LAYER.
- Source :
-
Analytical Letters . 2002, Vol. 35 Issue 5, p869-880. 12p. 1 Chart. - Publication Year :
- 2002
-
Abstract
- An amperometric glucose biosensor based on a coimmobilized electron transfer mediator (osmium-complex) layer, an enzyme (glucose oxidase) layer and a permeable pre-oxidation layer on a glassy carbon electrode was devised. The composition of the pre-oxidation layer was optimized. The permeable cellulose acetate membrane employing lead oxide as an interference-removing agent provided favorable permeability and was insusceptible to interference of ascorbic acid and uric acid. The biosensor exhibited high selectivity and a fast response and allowed a high working potential of +0.55V vs. SCE. The amperometric response to glucose shows a linear relation in the range from 0 to 10 mM with a correlation coefficient of 0.9967. The biosensor was applied to the determination of glucose in human serum. [ABSTRACT FROM AUTHOR]
- Subjects :
- *BIOSENSORS
*CONDUCTOMETRIC analysis
*CHARGE exchange
*ENZYMES
Subjects
Details
- Language :
- English
- ISSN :
- 00032719
- Volume :
- 35
- Issue :
- 5
- Database :
- Academic Search Index
- Journal :
- Analytical Letters
- Publication Type :
- Academic Journal
- Accession number :
- 8695927
- Full Text :
- https://doi.org/10.1081/AL-120004075