淮河流域盱眙段浅层地下水有机污染物特征及成因分析

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

应用GC/MS等多种分析技术,对淮河盱眙段浅层地下水45个监测点三大类(挥发性有机物、半挥发性有机物和有机磷农药)共82项有机物指标进行了监测分析。结果表明,半挥发性有机物(SVOC)中酞酸二辛酯、萘和菲普遍检出,挥发性有机物(VOC)和有机磷农药指标局部检出;PAHs个别指标浓度较高。所有检出的有机污染物无论是检出率还是检出浓度水平均表现出上游高于下游的特点。该地区的浅层地下水有机物污染与淮河污染、化肥农药施用、局部点源污染及地质环境特征有关。

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 emplaeed. 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.