Data/hora: 17/06/2024 02:05:01

Biblioteca(s): | Embrapa Pecuária Sudeste.
Data corrente: | 17/02/2023
Data da última atualização: | 17/02/2023
Autoria: | BRONDI, S. H. G.; MACEDO, A. N. DE; SOUZA, G. B. de; NOGUEIRA, A. R. de A.
Afiliação: | SILVIA H. G. BRONDI; ADRIANA N. DE MACEDO, UFSCAR; GILBERTO BATISTA DE SOUZA, CPPSE; ANA RITA DE ARAUJO NOGUEIRA, CPPSE.
Título: | Application of QuEChERS method and gas chromatography-mass spectrometry for the analysis of cypermethrin residue in milk.
Ano de publicação: | 2011
Fonte/Imprenta: | Journal of Environmental Science and Health, Part B, v. 46, p. 671?677, 2011.
DOI: | 10.1080/03601234.2012.592058
Idioma: | Inglês
Conteúdo: | Analytical methods for the isolation and determination of cypermethrin in milk, based on the solid-phase microextraction (SPME) and QuEChERS methods (Quick, Easy, Cheap, Effective, Rugged, and Safe) are presented. The SPME technique was not appropriate to analyse cypermethrin in milk, even establishing the best extraction conditions, polydimethylsiloxane fiber, 60 min time extraction, 60 &#9702;C temperature extraction, addition of salt (NaCl) and stirring rate. The extraction efficiency was low probably because of the matrix constituents. The QuEChERS method involves the extraction of the analyte with acetonitrile and simultaneous liquid-liquid partitioning formed by adding anhydrous MgSO4 plus NaCl, followed by the removal of residual water and cleanup using a procedure called dispersive solid-phase extraction, in which anhydrous MgSO4 plus PSA and C18 are mixed with 1 mL of acetonitrile extract. The detection and quantification limits were 0.01 and 0.04 mg kg&#8722;1 , respectively, and the percentage recovery obtained ranged from 92 to 105% with relative standard deviations below 7%.
Palavras-Chave: | Quick Easy Cheap Effective Rugged and Safe (QuEChERS).
Thesaurus Nal: | Cypermethrin; Solid phase microextraction.
Categoria do assunto: | W Química e Física
Registro original: | Embrapa Pecuária Sudeste (CPPSE)
Exemplares: | CPPSE - (25916-1) - UPC - AP - DD - PROCI-2011.00356 - BRO - 2023.00022 - DIS