Use este identificador para citar ou linkar para este item: https://locus.ufv.br//handle/123456789/19162
Tipo: Artigo
Título: Low-temperature clean-up method for the determination of pyrethroids in milk using gas chromatography with electron capture detection
Autor(es): Goulart, Simone Machado
Queiroz, Maria Eliana L.R. de
Neves, Antônio Augusto
Queiroz, José Humberto de
Abstract: This paper describes a new gas-chrormatography with electron capture detection (GC-ECD) method for determination of some pyrethroids in milk samples. The extraction of the pyrethroids was carried out by liquid–liquid extraction with clean-up by precipitation at low temperature, without additional stages for removal of fat interferences. The method was efficient with recoveries of 93.0 ± 0.1% for cipermethrin and 84.0 ± 0.3% for deltamethrin. The quantification limits were 0.75 μg L−1 for both pyrethroids. The method was simple, of easy execution, and used only small quantities of organic solvent. After optimization and validation, the method was used for the determination of residues of the pyrethroids cipermethrin and deltamethrin in milk and in lactea drink commercialized in Viçosa (MG, Brazil). Some samples presented contamination with deltamethrin at levels below the maximum contamination limits established by the FAO.
Palavras-chave: Pyrethroids
CG-ECD
Milk
Editor: Talanta
Tipo de Acesso: Elsevier B.V.
URI: https://doi.org/10.1016/j.talanta.2008.01.058
http://www.locus.ufv.br/handle/123456789/19162
Data do documento: 8-Fev-2008
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