Quantification of methomyl levels in cabbage, tomato, and soya milk using a renewable amperometric biosensor
Carregando...
Data
2013-06-01
Autores
Caetano, Josiane
Dragunski, Douglas C.
Pedrosa, Valber A. [UNESP]
Machado, Sergio A.S.
Título da Revista
ISSN da Revista
Título de Volume
Editor
Resumo
An enzymatic biosensor based on inhibition of acetylcholinesterase activity was developed to analyze methomyl contamination in different matrices. The detection limits under optimal working conditions were found to be 30.4 μg L-1 methomyl using the biosensor and 0.15 μg L-1 using HPLC. The biosensor was then applied to analysis of methomyl in fruit and vegetable samples at concentrations in the ppb range in the absence of sample pretreatment. Recovery levels using the biosensor were effective, ranging from 78.0 to 96.5%, while the HPLC method yielded 57.0 to 99.5% recovery. Results for total carbamate concentrations obtained using the acetylcholinesterase biosensor were compared to those obtained using HPLC. © 2013 by ESG.
Descrição
Palavras-chave
Biosensor, Food analysis, Methomyl, Pesticides
Como citar
International Journal of Electrochemical Science, v. 8, n. 6, p. 7795-7805, 2013.