Characteristics and formation of organic pollutants in shallow groundwater in the Xuyi area of the Huaihe River Basin

Organic pollutants including volatile organic compounds,semi-volatile organic compounds and Organophosphorus pesticide in shallow groundwater in Xuyi County were analyzed with GC/MS,HPLC and GC/ECD and 45 monitor points are emplaced.The result shows that Philippines,Naphthalene and di-2-ethylhexyl phthalate are generally detected among 82 detected substances.The Volatile organic compounds and organic pesticide are detected partly.The concentrations of PAHs in some samples are high.The content and the detection rate of organic pollutants upstream are higher than those downstream.The organic pollution in shallow groundwater in Xuyi county is related to the pollution of the Huaihe River,the use of chemical pesticide,the pollution of local point source and the geological characteristics of local environment.