Artigo de periódico
Determinação de resíduos de pesticidas em plasma bovino por cromatografia gasosa-espectrometria de massas.
Registro en:
Química Nova, v. 32, n. 7, p. 1713- 716, 2009.
Autor
MAFFEI, D. F.
NOGUEIRA, A. R. de A.
BRONDI, S. H. G.
Institución
Resumen
An analytical method for the isolation based on matrix solid-phase dispersion technique and gas chromatographic determination of pesticides in cattle plasma is presented. It was fortified 0.25 g of plasma with pesticides and blended with 1 g each C18 and Na2SO4. The homogenized matter was transferred to a SPE cartridge, which contained 1 g of activated florisil with 5 mL acetonitrile. The analites were eluted under vaccum with 15 mL acetonitrile, the extract was analyzed by gas chromatography-mass spectrometry. The limit of quantification of the method was 0.04 mg L-1 for chlorphenvinfos and fipronil and 0.02 mg L-1 for cypermethrin.