Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/87725
Type: Artigo de evento
Title: Electrochemical Oxidation, Adsorption And Quantification Of 1,2-benzopyrone Employing A Glassy Carbon Electrode
Author: De Azevedo L.F.M.
Trevisan M.G.
Garciaa J.S.
Lucho A.M.S.
Abstract: The electrooxidation of 1,2-benzopyrone (BP) was assessed via linear voltammetry and electrochemical impedance spectroscopy on a glassy carbon electrode in dibasic potassium phosphate buffer. The oxidation process for BP requires one electron and forms a ketone. This oxidation product was adsorbed by the electrode surface to form a film that blocks active sites and increases in thickness over consecutive measurements. The oxidation conditions were optimized using factorial design and Doehlert matrices. This electrochemical method was compared to high performance liquid chromatography (HPLC), which has a detection limit of 26.4 μmol L-1 for BP. The voltammetric results were statistically similar to those from HPLC; however, the method was faster, simpler, more easily acquired, more sensitive, and required less organic solvent. © 2014 Sociedade Brasileira de Quimica.
Editor: 
Rights: aberto
Identifier DOI: 10.5935/0103-5053.20140004
Address: http://www.scopus.com/inward/record.url?eid=2-s2.0-84898759895&partnerID=40&md5=28aaf06d73053756f761dfddc974f22e
Date Issue: 2014
Appears in Collections:Unicamp - Artigos e Outros Documentos

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