Electrochemical Determination of the Herbicide Bentazone Using a Carbon Nanotube beta-Cyclodextrin Modified Electrode

• Tipo: Artigo em Revista Científica Internacional
• Data: 2013

Autores

Rahemi, V (Autor) Outra; Garrido, JMPJ (Autor) Outra; Borges, F (Autor) FCUP; Brett, CMA (Autor) Outra; Garrido, EMPJ (Autor) Outra

Revista

Título: Electroanalysis

Vol. 25

ISSN: 1040-0397

Editora: Wiley-Blackwell

Indexação

ISI Web of Knowledge - 28 Citações

Scopus - 31 Citações

Classificação Científica

FOS: Ciências exactas e naturais > Química

Outras Informações

ID Authenticus: P-008-F1Y

Abstract (EN): An electrochemical sensor has been developed for the determination of the herbicide bentazone, based on a GC electrode modified by a combination of multiwalled carbon nanotubes (MWCNT) with ß-cyclodextrin (ß-CD) incorporated in a polyaniline film. The results indicate that the ß-CD/MWCNT modified GC electrode exhibits efficient electrocatalytic oxidation of bentazone with high sensitivity and stability. A cyclic voltammetric method to determine bentazone in phosphate buffer solution at pH6.0, was developed, without any previous extraction, clean-up, or derivatization steps, in the range of 10-80¿molL-1, with a detection limit of 1.6¿molL-1 in water. The results were compared with those obtained by an established HPLC technique. No statistically significant differences being found between both methods. © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Idioma: Inglês

Tipo (Avaliação Docente): Científica