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Spatial Distributions and Intrinsic Influence Analysis of Cr, Ni, Cu, Zn, As, Cd and Pb in Sediments from the Wuliangsuhai Wetland, China

Author

Listed:
  • Huilan Zhang

    (College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China
    China National Environmental Monitoring Centre, Beijing 100012, China)

  • Piaopiao Liang

    (College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China)

  • Ying Liu

    (College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China
    Beijing Engineering Research Center of Food Environment and Public Health, Minzu University of China, Beijing 100081, China)

  • Xinglei Wang

    (College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China)

  • Yahong Bai

    (College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China)

  • Yunxin Xing

    (College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China)

  • Chunli Wei

    (College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China)

  • Yuanyuan Li

    (College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China)

  • Yiming Liu

    (College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China)

  • Yu Hu

    (College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China)

Abstract

The spatial distributions of Cr, Ni, Cu, Zn, As, Cd and Pb (potentially toxic elements, PTEs) in sediments and intrinsic influence factors from the Wuliangsuhai wetland of the Hetao Irrigation District, China were studied in this work. The results showed that excluding Zn, the total contents of other PTEs were higher than the background values, of which As (39.26 mg·kg −1 ) and Cd (0.44 mg·kg −1 ) were six-fold and seven-fold higher, respectively. Especially, the high levels of Cd (70.17%), Pb (66.53%), and Zn (57.20%) in the non-residual fraction showed high bioavailability and mobility. It indicated that PTEs can enter the food chain more easily and produce much toxicity. Based on I geo , ICF, and MRI, the contamination of As was the most serious in the middle areas (MDP) of the wetland, and its risk was up to moderately strong. Cd and Pb posed moderate and considerate risk, respectively. Furthermore, 29.50% and 55.54% risk contribution ratio of As and Cd, respectively, showed that they were the dominant contaminants. In addition, the positive correlation between sand, OM, and total contents and chemical fractions of PTEs by using PCM, RDA, and DHCA indicated that physicochemical properties could significantly influence the spatial distributions of PTEs. The work was useful for assessing the level of pollution in the study area and acquiring information for future and possible monitoring and remediation activities.

Suggested Citation

  • Huilan Zhang & Piaopiao Liang & Ying Liu & Xinglei Wang & Yahong Bai & Yunxin Xing & Chunli Wei & Yuanyuan Li & Yiming Liu & Yu Hu, 2022. "Spatial Distributions and Intrinsic Influence Analysis of Cr, Ni, Cu, Zn, As, Cd and Pb in Sediments from the Wuliangsuhai Wetland, China," IJERPH, MDPI, vol. 19(17), pages 1-16, August.
    • Handle: RePEc:gam:jijerp:v:19:y:2022:i:17:p:10843-:d:902528
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    References listed on IDEAS

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    1. Wankun Deng & Yongbo Wang & Zexian Liu & Han Cheng & Yu Xue, 2014. "HemI: A Toolkit for Illustrating Heatmaps," PLOS ONE, Public Library of Science, vol. 9(11), pages 1-5, November.
    2. Siddhant Dash & Ajay S. Kalamdhad, 2021. "Understanding the dynamics of heavy metals in a freshwater ecosystem through their toxicity and bioavailability assay," Environment, Development and Sustainability: A Multidisciplinary Approach to the Theory and Practice of Sustainable Development, Springer, vol. 23(11), pages 16381-16409, November.
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