Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.22/3348
Título: Determination of methiocarb and Its degradation products, methiocarb sulfoxide and methiocarb sulfone, in bananas using QuEChERS extraction
Autor: Plácido, Alexandra
Paíga, Paula
Lopes, David H.
Correia, Manuela
Delerue-Matos, Cristina
Palavras-chave: Pesticides
Methiocarb
Degradation products
Bananas
QuEChERS
Data: 2013
Editora: American Chemical Society Publications
Relatório da Série N.º: Journal of Agricultural and Food Chemistry; Vol. 61
Resumo: The present work describes the development of an analytical method for the determination of methiocarb and its degradation products (methiocarb sulfoxide and methiocarb sulfone) in banana samples, using the QuEChERS (quick, easy, cheap, effective, rugged, and safe) procedure followed by liquid chromatography coupled to photodiode array detector (LCPAD). Calibration curves were linear in the range of 0.5−10 mg L−1 for all compounds studied. The average recoveries, measured at 0.1 mg kg−1 wet weight, were 92.0 (RSD = 1.8%, n = 3), 84.0 (RSD = 3.9%, n = 3), and 95.2% (RSD = 1.9%, n = 3) for methiocarb sulfoxide, methiocarb sulfone, and methiocarb, respectively. Banana samples treated with methiocarb were collected from an experimental field. The developed method was applied to the analysis of 24 samples (peel and pulp) and to 5 banana pulp samples. Generally, the highest levels were found for methiocarb sulfoxide and methiocarb. Methiocarb sulfone levels were below the limit of quantification, except in one sample (not detected).
Peer review: yes
URI: http://hdl.handle.net/10400.22/3348
ISSN: 0021-8561
1520-5118
Versão do Editor: http://pubs.acs.org/doi/abs/10.1021/jf304027s
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