Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.22/3525
Título: Electrochemical determination of the herbicide bentazone using a carbon nanotube b-Cyclodextrin modified electrode
Autor: Rahemi, V.
Garrido, Jorge
Borges, Fernanda
Oliveira-Brett, A. M.
Garrido, E. Manuela
Palavras-chave: Herbicides
Voltammetric sensors
Carbon nanotubes
Data: 2013
Editora: Wiley
Relatório da Série N.º: Electroanalysis; Vol. 25, Issue 10
Resumo: 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 b-cyclodextrin (b-CD) incorporated in a polyaniline film. The results indicate that the b-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 pH 6.0, was developed, without any previous extraction, clean-up, or derivatization steps, in the range of 10–80 mmolL 1, with a detection limit of 1.6 mmolL 1 in water. The results were compared with those obtained by an established HPLC technique. No statistically significant differences being found between both methods.
Peer review: yes
URI: http://hdl.handle.net/10400.22/3525
ISSN: 1521-4109
Versão do Editor: http://onlinelibrary.wiley.com/doi/10.1002/elan.201300230/abstract
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