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白洋淀重金属污染特征与生态风险评价

高秋生 田自强 焦立新 丁琳 杨苏文 郝子峰 崔志丹 贾海斌

高秋生, 田自强, 焦立新, 丁琳, 杨苏文, 郝子峰, 崔志丹, 贾海斌. 白洋淀重金属污染特征与生态风险评价[J]. 环境工程技术学报, 2019, 9(1): 66-75. doi: 10.3969/j.issn.1674-991X.2019.01.010
引用本文: 高秋生, 田自强, 焦立新, 丁琳, 杨苏文, 郝子峰, 崔志丹, 贾海斌. 白洋淀重金属污染特征与生态风险评价[J]. 环境工程技术学报, 2019, 9(1): 66-75. doi: 10.3969/j.issn.1674-991X.2019.01.010
GAO Qiusheng, TIAN Ziqiang, JIAO Lixin, DING Lin, YANG Suwen, HAO Zifeng, CUI Zhidan, JIA Haibin. Pollution characteristics and ecological risk assessment of heavy metals in Baiyangdian Lake[J]. Journal of Environmental Engineering Technology, 2019, 9(1): 66-75. doi: 10.3969/j.issn.1674-991X.2019.01.010
Citation: GAO Qiusheng, TIAN Ziqiang, JIAO Lixin, DING Lin, YANG Suwen, HAO Zifeng, CUI Zhidan, JIA Haibin. Pollution characteristics and ecological risk assessment of heavy metals in Baiyangdian Lake[J]. Journal of Environmental Engineering Technology, 2019, 9(1): 66-75. doi: 10.3969/j.issn.1674-991X.2019.01.010

白洋淀重金属污染特征与生态风险评价

doi: 10.3969/j.issn.1674-991X.2019.01.010
详细信息
    作者简介:

    高秋生(1992—),男,助理工程师,主要从事湖泊水污染控制研究, wintersgaoo@163.com

    通讯作者:

    焦立新 E-mail: jiaolx@craes.org.cn

  • 中图分类号: X524

Pollution characteristics and ecological risk assessment of heavy metals in Baiyangdian Lake

More Information
    Corresponding author: Lixin JIAO E-mail: jiaolx@craes.org.cn
  • 摘要: 为了解雄安新区核心水系——白洋淀重金属污染情况,在白洋淀布设了15个采样点,对水体和沉积物重金属浓度分布特征进行分析,利用综合污染指数法、地积累指数法和潜在生态风险指数法对重金属污染程度进行评价,并结合历史数据对2004—2016年沉积物中重金属浓度及潜在生态风险指数变化进行分析。结果表明:白洋淀水体中重金属Cr、Ni、Cu、Zn、As、Cd和Pb平均浓度分别为2.38、6.56、5.57、67.17、4.13、0.034、0.39 μg/L,其中烧车淀点的Cu和Zn浓度,寨南、洛网淀、圈头、枣林庄、光淀张庄、郭里口和安新大桥点的Zn浓度超过GB 3838—2002《地表水环境质量标准》Ⅰ类水质标准,其他采样点均优于Ⅰ类水质标准,且Cr、As、Cd和Pb在各采样点均优于Ⅰ类水质标准;沉积物中重金属Cr、Ni、Cu、Zn、As、Cd、Pb平均浓度分别为48.53、25.51、28.83、91.19、161.51、3.21、45.26 mg/kg,其中Cr和Ni浓度在各采样点均优于GB 15618—1995《土壤环境质量标准》Ⅰ类标准,Cu、Zn和Pb浓度在各采样点优于Ⅱ类标准,As和Cd浓度在各采样点显著高于Ⅲ类标准。综合污染指数显示白洋淀水体重金属无污染,地积累指数(Igeo)和潜在生态风险指数(RI)表明白洋淀沉积物中Cd污染极为严重,As污染较重,应引起足够的重视。2004—2016年白洋淀沉积物中As、Cd和Pb浓度急剧增加,尤其是Cd对RI贡献率为83%以上,是主要的污染因子,应加强Cd入湖污染控制和底泥污染治理。

     

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