Netherlands - Biosensors for environmental monitoring: A regulatory perspective: In TRENDS ANAL. CHEM. (14/7 (289–294) 1995) K.R. Rogers & L.R. Williams of TrAC Editorial Office report on ‘Biosensors for environmental monitoring: A regulatory perspective’
- Publisher
- Elsevier Science
- Year
- 1996
- Tongue
- English
- Weight
- 247 KB
- Volume
- 11
- Category
- Article
- ISSN
- 0956-5663
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✦ Synopsis
France -Development of amperometric biosensors In ANAL. CHIM. ACTA (3 1 l/l (23-30) 1995) L. Cache-Guerente, S. Cosnier, C. Innocent & P. Ma&y of the Universite Joseph Fourier Grenoble report on 'Development of amperometric biosensors based on the immobilization of enzymes in polymer films electrogenerated from a series of amphiphilic py-rrole derivatives'.
A series of amphiphilic pyrrolyl-alkylammonium ions have been used for the immobilization at the electrode surface of horseradish peroxidase, galactose oxidase, polyphenol oxidase, glucose oxidase and xanthine oxidase in polypyrrolic films. The enzyme retention properties of the different polymers indicate that the least hydrophobic monomer has the best immobilization efficiency. Electrochemical assays performed for galactose, glucose and hypoxanthine detection show that bioelectrode sensitivity is related to the permeability of the host polymer. The selectivity of the glucose oxidase electrodes towards interfering agents like ascorbate, urate and acetaminophen show these agents interfering to some extent when present at physiological concentrations.