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Seasonal and Spatial Variation in Dissolved Heavy Metals in Liaodong Bay, China

Author

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  • Weijun Guo

    (College of Environmental Sciences and Engineering, Dalian Maritime University, Dalian 116026, China
    State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116023, China)

  • Jibing Zou

    (College of Environmental Sciences and Engineering, Dalian Maritime University, Dalian 116026, China)

  • Sihong Liu

    (College of Environmental Sciences and Engineering, Dalian Maritime University, Dalian 116026, China)

  • Xuewen Chen

    (Suzhou New District (Huqiu District) Shishan & Hengtang Sub-District Construction and Management Service Centre, Suzhou 215000, China)

  • Xiangpeng Kong

    (College of Environmental Sciences and Engineering, Dalian Maritime University, Dalian 116026, China)

  • Hong Zhang

    (Dalian Municipal Public Utilities Service Center, Dalian 116021, China)

  • Tiaojian Xu

    (State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116023, China)

Abstract

Spatial–seasonal variations in dissolved heavy metals in surface seawater were analyzed based on surveys at 87 sampling sites and water samples from six rivers across Liaodong Bay. The concentrations of copper (Cu), lead (Pb), cadmium (Cd), and zinc (Zn) had ranges of 0.20–40.00 (5.45 ± 5.67), 0.51–33.64 (4.68 ± 3.93), 0.03–13.47 (2.22 ± 2.01), and 0.50–80.09 μg/L (14.22 ± 16.32), respectively, throughout the four seasons of 2020. The trace metal concentration showed a spatial gradient of high to low from river to estuary and from inshore to offshore areas. A combination of pollution levels and marine sensitivity was employed to assess the pollution degree of the heavy metals. As a whole, the single pollution factors of trace metals in Liaodong Bay were ranged in the order Pb > Zn > Cu > Cd. The total pollution degree was relatively high in autumn and summer due to increased riverine inputs after the rainy season, while relatively low in spring and winter. These findings provide baseline data for future targeting policies to protect marine environments in Liaodong Bay.

Suggested Citation

  • Weijun Guo & Jibing Zou & Sihong Liu & Xuewen Chen & Xiangpeng Kong & Hong Zhang & Tiaojian Xu, 2022. "Seasonal and Spatial Variation in Dissolved Heavy Metals in Liaodong Bay, China," IJERPH, MDPI, vol. 19(1), pages 1-12, January.
    • Handle: RePEc:gam:jijerp:v:19:y:2022:i:1:p:608-:d:718464
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    Citations

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    Cited by:

    1. Tingting Zhang & Mei Shi & Hao Yan & Cheng Li, 2022. "Effects of Salicylic Acid on Heavy Metal Resistance in Eukaryotic Algae and Its Mechanisms," IJERPH, MDPI, vol. 19(20), pages 1-12, October.
    2. Weijun Guo & Sihong Liu & Xiangpeng Kong & Lixin Sun & Jibing Zou, 2022. "Distribution of Trace Metals in Ice and Water of Liaodong Bay, China," IJERPH, MDPI, vol. 19(22), pages 1-11, November.

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