Detection of organophosphorus pesticide residues in vegetables and fruits in markets of Harbin city

Objective To know organophosphorus pesticide residues in the vegetables and fruits sold in markets of Harbin.Methods The method of GB/T5009.20-2003 was applied to determine the contents of seven organophosphorus pesticides in samples selected randomly.Results Totally 200 vegetable samples and 130 fruit samples were collected.Four kinds of organophosphorus pesticides(methamidophos,dichlorvos,folimat,and isocarbophos) were detected in vegetables.The folimat banned was detected in 20 vegetable samples with a detection rate of 12.0%.The unqualified rate of all vegetables,leafy vegetables,starchy vegetables and melon vegetables were 17.0%,11.0%,0.5%,and 5.5%,respectively.Three kinds of organophosphorus pesticides(methamidophos,dichlorvos and folimat) were detected in fruits with a unqualified rate of 3.08%.Conclusion There are organophosphorus pesticide pollution in vegetables and fruits in the markets of Harbin city.Therefore,it is necessary to strengthen the surveillance and study of organophosphorus pesticide residues.