Author(s): Nguyen Ly Sy Phu; To Thi Hien
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Keywords: Organochlorine pesticides; Organophosphorus pesticides; Surface water; Agricultural area…
Abstract: Residual levels of organochlorine and organophosphorus pesticides in surface water in some agricultural areas in Ho Chi Minh City were investigated in 2013. Five organophosphorus pesticides including Diazinon, Malathion, Parathion, Ethion and Trithion and eight organochlorine pesticides including Alpha-HCH, beta-HCH, gamma-HCH, Aldrin, Heptachlor–epoxide, Alpha-Endosulfan, 4 4’-DDT and Endosulfan-sulfate were determined in the surface water in four dicstricts: Binh Chanh, Hoc Mon, Cu Chi and Binh Tan using gas chromatographic method with electron capture detector (GC-ECD). The results showed that residues of pesticide were found with high concentrations in surface water in agricultural areas and pesticide residues changed depending on growth stages of crops. The concentration and distribution of pesticides were different in the water samples at different sites. Residues of pesticides such as Parathion, Ethion and Trithion were detected in surface water although these chemicals have been banned.
Year: 2014