Simultaneous Determination of Organophosphorus Pesticide Residues in Vegetables With Chromatography

Objective To study a method for simultaneous determination of organophosphorus pesticide residues in vegetables. Methods The contents of methamidophos, dichlorvos, acephate, omethoate, phorate, dimethoate, alathion and parathion in the pre-treated vegetable samples were determined. The recovery rate and accuracy of the method were analyzed. The recoveries of methamidophos, dichlorvos, acephate, omethoate, phorate, dimethoate, alathion and parathion were 99.0%, 96.0%, 103.4%, 101.3%, 95.9%, 99.4%, 92.4% and 91.0% respectively. The coefficients of variation were 6.91%, 6.09%, 9.23%, 9.63%, 9.18%, 7.01%, 6.82% and 7.50% respectively. Conclusion The method was simple with the better recovery rate and accuracy and less interfering factors.