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Type: Artigo de periódico
Title: Laccase-based screen printed electrode for amperometric detection of phenolic compounds
Author: Freire, RS
Duran, N
Wang, J
Kubota, LT
Abstract: A laccase-based screen-printed electrode for monitoring phenolic compounds in environmental samples is described. The selectivity and sensitivity of laccase-catalyzed phenol oxidation were combined with the advantages of the screen-printing micro fabrication technology. Laccase was immobilized over the screen-printed carbon surface by simultaneous cross-linking and covalent binding methods. Variables relevant to laccase immobilization on the screen-printed electrode surface were examined and optimized. This sensor allowed the convenient quantification of guaiacol and oguaiacol down to 50 and 30 nmol L-1. respectively, and selective measurements in untreated river and groundwater samples, These, and their attractive performance characteristics, are described.
Subject: biosensors
screen-printed electrodes
phenolic compounds
in situ monitoring
Country: EUA
Editor: Marcel Dekker Inc
Citation: Analytical Letters. Marcel Dekker Inc, v. 35, n. 1, n. 29, n. 38, 2002.
Rights: fechado
Identifier DOI: 10.1081/AL-120002359
Date Issue: 2002
Appears in Collections:Unicamp - Artigos e Outros Documentos

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