Determination of Organophosphorus and Carbamate Pesticide Residues in Water by Gas Chromatography-Mass Spectrometry / 环境与健康杂志

ABSTRACT

Objective To establish a method for determination of organophosphorus and carbamate pesticide residues in water by GC-MS.Methods Twelve kinds of organophosphorus and carbamate pesticide residues were determined with GC-MS with methylenechloride and petroleum ether(4∶1) as extraction solvent.Results The linear ranges of 12 kinds of pesticides were perfect in the range of 0.01-1.0?g/ml,r≥0.997,the average rates of recovery were 76.0%-111.0%,and RSD were 5.20%-9.20%,the lowest limit detection(S/N=3) of dichlorvos,chinomethionate,parathion,bromophos,carbophenothion,fenthion,isoprocarb,pirimicarb,aminocarb,thiobencarb,pendimethalin,malathion was 0.009,0.003,0.008,0.001,0.003,0.003,0.0025,0.009,0.005,0.010,0.010,0.006 ?g/ml respectively.Conclusion This method is simple,rapid,sensitive and can be applied to the simultaneous determination of 12 kinds of organophosphorus and carbamate pesticides in the water.