Analysis of Pesticide Residues and Heavy Metal Pollution in Vegetables of a Poor Villagein Hengshishui Town, Yingde City
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Abstract:
The paper analyzed the pesticide residues and heavy metal pollution in vegetables of xibei village in hengshishui town, Yingde city. The gas chromatograph (GC)-flame photometric detector (GC-FPD) was adopted to determine the 20 organophosphorus pesticide residues of 24 vegetable samples, , including methamidophos, pharate, terbufos, parathion-methyl, fenitrothion, isofenphos-methyl, Profenofos, Phosalone, dichlorvos, acephate, sulfotep, omethoate, dimethoate, chlorpyrifos, malathion, paraoxon, isocarbophos, methidathion triazophos and phosmet. 12 pesticide residues , including α-BHC(benzene hexachloride), β-BHC, γ-BHC, δ-BHC, chlorothalonil, traidimefon, fenpropathrin, Pyridaben, cypermethrin, fenvalerate, deltamethrin and fipronil, were determined by gas chromatograph (GC)-electron capture detector(GC-ECD) In addition, the plumbum content was detected by atomic absorption- graphite furnace and the content of arsenic and mercury was detected by atomic fluorescence spectrophotometry . The detection results showed that none of the aforementioned 32 pesticides and 3 heavy metals were detected in vegetable samples. These results could provide a theoretical basis for the position of vegetables quality of xibei village in hengshishui town, Yingde city.
