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Spatial Distribution, Pollution Characteristics, and Health Risk Assessment of Heavy Metals in Soils from a Typical Agricultural County, East China

Author

Listed:
  • Linsong Yu

    (Shandong Institute of Geophysical and Geochemical Exploration, Jinan 250013, China
    School of Earth Sciences, Chengdu University of Technology, Chengdu 610059, China)

  • Hongbo Liu

    (Shandong Institute of Geophysical and Geochemical Exploration, Jinan 250013, China)

  • Weidong Liu

    (Shandong Provincial Bureau of Geology & Mineral Resources, Jinan 250013, China)

  • Pinrui Qin

    (Shandong Provincial Bureau of Geology & Mineral Resources, Jinan 250013, China)

  • Jian Yu

    (Shandong Provincial Bureau of Geology & Mineral Resources, Jinan 250013, China)

  • Bing Zhou

    (School of Earth Sciences, Chengdu University of Technology, Chengdu 610059, China)

  • Fugui Zhang

    (Institute of Geophysical & Geochemical Exploration, Chinese Academy of Geological Sciences, Langfang 065000, China)

  • Ziwan Chen

    (School of Earth Sciences, Chengdu University of Technology, Chengdu 610059, China)

  • Yuyan Zhao

    (College of Geo-Exploration Science and Technology, Jilin University, Changchun 130012, China)

  • Zeming Shi

    (School of Earth Sciences, Chengdu University of Technology, Chengdu 610059, China)

Abstract

This study collected 1135 topsoil samples of cultivated land in Laiyang County, eastern China, to analyze the distribution, pollution and health risks of heavy metals (As, Cd, Cu, Cr, Hg, Ni, Pb and Zn). The results show that: (1) the levels of eight heavy metals at some sites were higher than the risk screening values in China, and there was heavy metal pollution. (2) An improved geoaccumulation index was used to evaluate soil pollution. The average value of I geo before and after improvement was 0.32 ( I ml , no pollution to medium pollution) and −0.04 ( I ol , no pollution), respectively. (3) Hg and Cd were identified as the main contributors to ecological risk in this study, with a cumulative ecological risk contribution percentage > 65%. The results of the potential ecological risk index ( PERI ) show that 9.3% of the sampling sites were considered to have moderate ecological risk. (4) As, Pb, Ni and Cu made a contribution of >95% in terms of non-carcinogenic risk to adults and children through different exposure routes, and different soil intake routes posed no non-carcinogenic risk to adults; there was a sampling site with HQ Children > 1, which was consistent with the non-carcinogenic risk site, indicating that children in this location and surrounding areas are more likely to face dual health risks. Therefore, it is necessary to promote the risk management of heavy metals in the study area in order to safely use soil resources.

Suggested Citation

  • Linsong Yu & Hongbo Liu & Weidong Liu & Pinrui Qin & Jian Yu & Bing Zhou & Fugui Zhang & Ziwan Chen & Yuyan Zhao & Zeming Shi, 2022. "Spatial Distribution, Pollution Characteristics, and Health Risk Assessment of Heavy Metals in Soils from a Typical Agricultural County, East China," Agriculture, MDPI, vol. 12(10), pages 1-21, September.
    • Handle: RePEc:gam:jagris:v:12:y:2022:i:10:p:1565-:d:927487
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    References listed on IDEAS

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    1. Nasrullah Khan & Jawad Khan & Rafi Ullah & Kishwar Ali & David Aaron Jones & Muhammad Ezaz Hasan Khan, 2022. "Heavy Metals Contaminants in Watercress ( Nasturtium officinale R. BR.): Toxicity and Risk Assessment for Humans along the Swat River Basin, Khyber Pakhtunkhwa, Pakistan," Sustainability, MDPI, vol. 14(8), pages 1-14, April.
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