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天津临港滨海湿地公园重金属污染特征及风险评价

马香菊 徐慧韬 王丽平

马香菊, 徐慧韬, 王丽平. 天津临港滨海湿地公园重金属污染特征及风险评价[J]. 环境工程技术学报, 2021, 11(5): 908-918. doi: 10.12153/j.issn.1674-991X.20200281
引用本文: 马香菊, 徐慧韬, 王丽平. 天津临港滨海湿地公园重金属污染特征及风险评价[J]. 环境工程技术学报, 2021, 11(5): 908-918. doi: 10.12153/j.issn.1674-991X.20200281
Xiangju MA, Huitao XU, Liping WANG. Pollution characteristics and risk assessment of heavy metals in Tianjin Lingang Coastal Wetland Park[J]. Journal of Environmental Engineering Technology, 2021, 11(5): 908-918. doi: 10.12153/j.issn.1674-991X.20200281
Citation: Xiangju MA, Huitao XU, Liping WANG. Pollution characteristics and risk assessment of heavy metals in Tianjin Lingang Coastal Wetland Park[J]. Journal of Environmental Engineering Technology, 2021, 11(5): 908-918. doi: 10.12153/j.issn.1674-991X.20200281

天津临港滨海湿地公园重金属污染特征及风险评价

doi: 10.12153/j.issn.1674-991X.20200281
详细信息
    作者简介:

    马香菊(1994—),女,硕士研究生,主要从事海洋生态研究, mxiangju2020@163.com

    通讯作者:

    王丽平 E-mail: wanglp@craes.org.cn

  • 中图分类号: X820.4

Pollution characteristics and risk assessment of heavy metals in Tianjin Lingang Coastal Wetland Park

More Information
    Corresponding author: Liping WANG E-mail: wanglp@craes.org.cn
  • 摘要: 为了解天津临港滨海湿地公园重金属的污染特征及环境风险,检测了天津近海海域6种常见重金属Cu、Pb、Zn、Cd、Cr和As在湿地水体和沉积物中的浓度,并采用重金属污染指数法、物种敏感性分布法和地累积指数法与潜在生态风险指数法分别对水体和沉积物中的重金属风险进行评估。结果表明:水体中只检出Cr、Cu、Zn和As,各采样点浓度均值分别为50.93、2.56、38.21和8.67 μg/L,其中Cu、Zn、As浓度在各采样点均未超过GB 3838—2002《地表水环境质量标准》中Ⅳ类水质标准;沉积物中检出Cr、Cu、Zn、As、Cd和Pb,各采样点浓度均值分别为66.28、24.12、91.37、9.83、0.88和20.38 mg/kg,其中Cr、Cu、Zn和Cd不同程度超过我国土壤环境背景值。对水体重金属的风险评价,重金属污染指数法评价结果为低污染,主要污染重金属为Cr;物种敏感性分布法评价结果为中~高生态风险,As为导致高风险的主要重金属元素。对沉积物重金属的风险评价,地累积指数法评价结果表明Cd为中度污染,Cr、Cu、Zn、As和Pb为无污染或轻度污染;潜在生态风险指数法评价结果显示,研究区域为中、高生态风险程度。由于不同评价方法的参照状态、风险受体或保护目标不同,导致评价结果存在明显差异,建议根据风险高的评价结果采取防治措施,从而更严格地保护湿地公园生态系统。

     

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  • 收稿日期:  2020-11-27
  • 刊出日期:  2021-09-20

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