石家庄市滹沱河冲洪积扇地下水中BHT和TEP的污染水平及风险评价

发布时间：2017-12-26 18:21

本文关键词：石家庄市滹沱河冲洪积扇地下水中BHT和TEP的污染水平及风险评价　出处：《环境科学研究》2016年09期 　论文类型：期刊论文

【摘要】：为了解华北平原地下水的有机污染状况,在石家庄市滹沱河冲洪积扇采集44个地下水水样,测定了被广泛应用的抗老剂BHT(2,6-二叔丁基对甲酚)和增塑剂TEP(磷酸三乙酯)的污染水平,分析了其分布受水文地质的影响及其对人体健康的风险.结果表明,ρ(BHT)在ND(低于检出限)~7.158μg/L之间,中位值为0.010μg/L,检出率为98%;ρ(TEP)在ND~5.081μg/L之间,中位值为0.177μg/L,检出率为70%.地下水的水文特性(如导水性、富水性和渗透系数)影响BHT和TEP的分布,二者在导水性、富水性较好和渗透性差的滹沱河冲洪积扇中部浅层孔隙水单元的质量浓度较高,分别为0.001~7.158和ND~3.604μg/L.石家庄市滹沱河冲洪积扇地下水中ρ(BHT)和ρ(TEP)均低于国外报道值,但检出率高于国外报道值,其中11%的地下水水样中ρ(TEP)高于OECD(经济合作与发展组织)规定的饮用水风险特征阈值(2.4μg/L).研究显示,石家庄市滹沱河冲洪积扇地区来自于地表的化工产品已淋溶到地下,并对该地区地下水造成了污染.
[Abstract]:In order to understand the status of organic pollution of groundwater in the North China Plain, Shijiazhuang city in the Hutuo River alluvial fan collected 44 groundwater samples, the widely used anti-aging agent BHT was determined (2,6- butylated hydroxytoluene) and plasticizer TEP (three ethyl phosphate) pollution level, analyzes its distribution affected by hydrogeology and the risk to human health. The results showed that P (BHT) in ND (lower than the detection limit) between ~7.158 g/L and the median value was 0.010 g/L, the detection rate was 98%; P (TEP) between ND~5.081 g/L and the median value was 0.177 g/L, the detection rate of the hydrological characteristics of groundwater 70%. (such as the water conductivity and water permeability coefficient and influence the distribution of BHT and TEP), two in the water, water rich in good and poor permeability of the Hutuo River alluvial proluvial fan middle high concentration of shallow pore water unit, respectively 0.001~7.158 and ND~3.604 g/L. of Shijiazhuang City Hutuo alluvial river The fan in the groundwater P (BHT) and P (TEP) were lower than the reported value, but the detection rate is higher than that reported abroad, of which 11% groundwater samples in P (TEP) higher than that of OECD (Organization for economic cooperation and development) drinking water risk characteristics specified threshold (2.4 g/L). Research shows that the city of Shijiazhuang the Hutuo River alluvial fan area from the surface of the chemical products have been leached into the underground, and the groundwater pollution.
【作者单位】：中国环境科学研究院国家环境保护饮用水水源地保护重点实验室环境基准与风险评估国家重点实验室;河北师范大学化学与材料科学学院;
【基金】：国家环境保护公益性行业科研专项(201409029)
【分类号】：X523;X824
【正文快照】： 地下水是我国水资源的重要组成部分,全国20%左右的供水来自地下水,淮河平原和华北平原生活饮用水中地下水占60%~70%[1],因此,地下水对我国的经济生活与社会发展有着重要的影响.华北平原位于我国重要的经济战略发展区域,地下水是华北平原重要饮用水源和战略资源[2].随着经济社

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