Abstract:

A method combined solid phase extraction (SPE) with gas chromatography (GC) for simultaneous determination of eight representative organophosphorous compounds was developed in this paper. Dichlorvos, chlorpyrifos, parathion, parathion-methyl, dimethoate, omethoate, methamidophos, malathion methamidophos, were selected as the analytic targets representing organophosphorous pesticides. The detection limit was between 1.1ug/L to 2.5ug/L. The linear range was between 0.1mg/L to 4mg/L. The relative standard deviation ranged from 2.0% to 7.4%. The average recoveries ranged from 69.1% to 108.2%. The method discussed could be applied for quick and accurate simultaneous determination of organophosphorous pesticides.