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Determination of methiocarb and Its degradation products, methiocarb sulfoxide and methiocarb sulfone, in bananas using QuEChERS extraction
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Orientador(es)
Resumo(s)
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).
Descrição
Palavras-chave
Pesticides Methiocarb Degradation products Bananas QuEChERS
Contexto Educativo
Citação
Editora
American Chemical Society Publications