Coulometric detector based on porous carbon felt working electrode for flow injection analysis

Citation
Gn. Chen et al., Coulometric detector based on porous carbon felt working electrode for flow injection analysis, TALANTA, 53(3), 2000, pp. 651-660
Citations number
14
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences
Journal title
TALANTA
ISSN journal
0039-9140 → ACNP
Volume
53
Issue
3
Year of publication
2000
Pages
651 - 660
Database
ISI
SICI code
0039-9140(200012)53:3<651:CDBOPC>2.0.ZU;2-7
Abstract
A coulometric detector based on carbon felt as working electrode has been d esigned. Ascorbic acid, hydroquinone, gallic acid and sulfur dioxide were u sed as electroactive compounds to determine the electrochemical characteris tics of this detector. Phe coulometric conversion efficiency, selectivity, linear response range, detection limit and mass transfer coefficient were i nvestigated in order to use the detector as a cleanup device in a flow inje ction system with dual-detector. This system has been used for determinatio n of sulfur dioxide in wine, and the results are compared to those from the aspiration-oxidation method. (C) 2000 Elsevier Science B.V. All rights res erved.