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Distribution Characteristics and Potential Risks of Polycyclic Aromatic Hydrocarbon (PAH) Pollution at a Typical Industrial Legacy Site in Tianjin, North China

Author

Listed:
  • Chaocan Li

    (Tianjin Key Laboratory of Aquatic Science and Technology, School of Environmental and Municipal Engineering, Tianjin Chengjian University, Tianjin 300384, China)

  • Xiaopeng Zhang

    (Tianjin North China Geological Exploration General Institute, Tianjin 300170, China
    Tianjin HuaKan Environmental Treatment Engineering Co., Ltd., Tianjin 300170, China)

  • Xuqin Wang

    (Tianjin Key Laboratory of Aquatic Science and Technology, School of Environmental and Municipal Engineering, Tianjin Chengjian University, Tianjin 300384, China)

  • Xinbo Zhang

    (Tianjin Key Laboratory of Aquatic Science and Technology, School of Environmental and Municipal Engineering, Tianjin Chengjian University, Tianjin 300384, China)

  • Shigang Liu

    (Tianjin North China Geological Exploration General Institute, Tianjin 300170, China
    Tianjin HuaKan Environmental Treatment Engineering Co., Ltd., Tianjin 300170, China)

  • Ting Yuan

    (Tianjin North China Geological Exploration General Institute, Tianjin 300170, China
    Tianjin HuaKan Environmental Treatment Engineering Co., Ltd., Tianjin 300170, China)

  • Weigui Qu

    (Tianjin North China Geological Exploration General Institute, Tianjin 300170, China
    Tianjin HuaKan Environmental Treatment Engineering Co., Ltd., Tianjin 300170, China)

  • Youjun Zhang

    (Tianjin North China Geological Exploration General Institute, Tianjin 300170, China
    Tianjin HuaKan Environmental Treatment Engineering Co., Ltd., Tianjin 300170, China)

Abstract

Polycyclic aromatic hydrocarbon (PAH) pollution in the soil of industrial legacy sites is a prominent problem when reusing urban land. To estimate the potential risks of PAHs, this study investigated 16 priority PAHs in the soil at different depths in a typical decommissioned industrial site in Tianjin. PAH concentrations were determined via gas chromatography-(tandem) quadrupole mass spectrometry. Incremental lifetime cancer risk (ILCR) assessment was applied to assess the potential risks to the population after land reconstruction. The total concentrations of PAHs in the soil at different depths ranged from 38.3 ng·g −1 to 1782.5 ng·g −1 , which were below the risk control standard for soil contamination of development land (GB 36600-2018). Low-ring (two-three ring) PAHs exhibit a dominant component, and the variations in PAH compositions were closely related to the former production units and soil properties. Compared to silty clay layers, PAHs tended to accumulate in the permeable miscellaneous fill layers. Incremental lifetime cancer risk assessment values associated with different exposure pathways for children, adolescents, and adults were calculated. The results showed potential carcinogenic risks for people of varying ages in this area, but they were still acceptable. In general, this legacy site can meet the demands of sustainable land development.

Suggested Citation

  • Chaocan Li & Xiaopeng Zhang & Xuqin Wang & Xinbo Zhang & Shigang Liu & Ting Yuan & Weigui Qu & Youjun Zhang, 2022. "Distribution Characteristics and Potential Risks of Polycyclic Aromatic Hydrocarbon (PAH) Pollution at a Typical Industrial Legacy Site in Tianjin, North China," Land, MDPI, vol. 11(10), pages 1-16, October.
    • Handle: RePEc:gam:jlands:v:11:y:2022:i:10:p:1806-:d:943297
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    References listed on IDEAS

    as
    1. Jing Ma & Wangyuan Zhang & Yi Chen & Shaoliang Zhang & Qiyan Feng & Huping Hou & Fu Chen, 2016. "Spatial Variability of PAHs and Microbial Community Structure in Surrounding Surficial Soil of Coal-Fired Power Plants in Xuzhou, China," IJERPH, MDPI, vol. 13(9), pages 1-13, September.
    2. Weidong Xiao & Liquan Qu & Kai Li & Chuanxu Guo & Jie Li, 2022. "An Assessment of the Rational Range of Eco-Compensation Standards: A Case Study in the Nujiang Prefecture, Southwestern China," Land, MDPI, vol. 11(9), pages 1-17, August.
    3. Juan Zhang & Shukai Fan & Xiaoming Du & Juncheng Yang & Wenyan Wang & Hong Hou, 2015. "Accumulation, Allocation, and Risk Assessment of Polycyclic Aromatic Hydrocarbons (PAHs) in Soil-Brassica chinensis System," PLOS ONE, Public Library of Science, vol. 10(2), pages 1-16, February.
    4. Wei Cao & Liqin Yin & Dan Zhang & Yingying Wang & Jing Yuan & Yi Zhu & Junfeng Dou, 2019. "Contamination, Sources, and Health Risks Associated with Soil PAHs in Rebuilt Land from a Coking Plant, Beijing, China," IJERPH, MDPI, vol. 16(4), pages 1-16, February.
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