Application of the matrix solid phase dispersion (MSPD) technique in the analysis of pesticides in okra by GC-MS

Química Nova

Dórea, Haroldo Silveira¹  Lopes, Waneide Gomes¹  Universidade Federal de Sergipe, São Cristóvão¹ 

关键词: MSPD;    pesticides;    GC-MS.;   

DOI  :  10.1590/S0100-40422004000600010

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

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.

【 授权许可】

Unknown