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Aplicação da técnica de dispersão da matriz em fase sólida (DMFS) na análise de pesticidas em quiabo por CG-EM Application of the matrix solid phase dispersion (MSPD) technique in the analysis of pesticides in okra by GC-MS

By Haroldo Silveira Dórea and Waneide Gomes Lopes

Abstract

<abstract language="eng">A matrix solid phase dispersion and gas chromatography-mass selective detection method for the simultaneous determination of monocrotophos, methyl parathion, cypermethrin and deltamethrin in okra is described. Analyses of 2 g of fortified okra (0.05-0.75 mg kg-1) showed an average recovery of 96.2% (71.4-128.4%) and average relative standard deviation of 11.7% (1.4-37.1%). The cypermethrin recovery at the lower level was above 130%. The limit of detection ranged from 0.02 to 0.15 mg kg-1. The procedure was applied to the okra samples and has found 0.56 mg kg-1 of cypermethrin-cis, 0.75 mg kg-1 of cypermethrin-trans and 2.71 mg kg-1 of deltamethrin

Topics: MSPD, pesticides, GC-MS, Chemistry, QD1-999, Science, Q, DOAJ:Chemistry (General), DOAJ:Chemistry
Publisher: Sociedade Brasileira de Química
Year: 2004
DOI identifier: 10.1590/S0100-40422004000600010
OAI identifier: oai:doaj.org/article:b7ce15ef7ced4db68d72b449e2d0e8eb
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