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Measurements of Organic Phosphorus Pesticides Residual Quantity in Vegetable by Using GC

Zan Wang

Abstract

A analysis method for determinating residues of Methamidophos,Phorate,Omethoate,Dimethoate,Methyl parathion,Chlorpyrifos and Parathion in vegetable by the gas chromatograp-hy was studied.All pesticides were added three kinds of densities(0.05、0.1、0.5) mg·kg-1 in recovery experiment.The average recoveries of the analytical method for the fortified samples in cucumber and bean were 74.3 %～115 %,with the coefficient of variation within 18.6 %.The minimum detection limits for seven kinds of carbamate pesticides were in range of 0.017 2～0.102 mg·kg-1.

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Key concepts: Methamidophos, Phorate, Dimethoate, Omethoate, Pesticide, Parathion methyl, Chemistry, Parathion