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Screening of carbamates and ureas in fresh and processed tomato samples using micowave-assisted extraction and liquid chromatography
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Orientador(es)
Resumo(s)
An analytical method, based on microwave-assisted extraction and
liquid chromatography with diode array detection, for the determination of six
carbamate and three urea pesticides in fresh and processed tomato samples is
described. Significant parameters affecting extraction efficiency were optimized.
Under optimum microwave-assisted extraction conditions (20mL acetonitrile,
for 10 minutes, at 60º C), pesticides were extracted with recoveries ranging from
57.6 to 102% (RSDs<7%). Quantification limits between 6.5 and 39.6 µg=kg were
obtained. A total number of 28 different fresh tomato samples and 6 processed
tomato products were analysed. Confirmation of suspicious samples was
performed by LC-MS.
Descrição
Palavras-chave
Carbamates Liquid chromatography Microwave-assisted extraction Pesticides Tomato Ureas
Contexto Educativo
Citação
Editora
Taylor & Francis