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Speciation Variation and Comprehensive Risk Assessment of Metal(loid)s in Surface Sediments of Intertidal Zones

Author

Listed:
  • Baocui Liang

    (State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China)

  • Xiao Qian

    (State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China)

  • Shitao Peng

    (Tianjin Research Institute for Water Transport Engineering, Centre for Environmental Science and Technology, Tianjin 300456, China)

  • Xinhui Liu

    (State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China)

  • Lili Bai

    (State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China)

  • Baoshan Cui

    (State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China)

  • Junhong Bai

    (State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China)

Abstract

Speciation variation and comprehensive risk assessment of metal(loid)s (As, Cd, Cr, Cu, Mn, Ni, Pb and Zn) were investigated in surface sediments from the intertidal zones of the Yellow River Delta, China. Results showed that only the concentrations of As, Cd and Pb were significantly different between April and September ( p < 0.01). In April, the residual fraction (F4) was predominant for As, Cr, Cu, Ni and Zn. However, the exchangeable and carbonate-associated fraction (F1) was dominant for Cd averaging 49.14% indicating a high environmental risk. In September, the F4 fraction was predominant and the F1 fraction was very low for most metal(loid)s except Cd and Mn. The geo-accumulation index ( I geo ), the F1 fraction and potential ecological risk index (PERI) of most metal(loid)s were relatively low in surface sediments for both seasons. But Pb, As and Ni were between the threshold effect level (TEL)and the probable effect level (PEL) for 66.67%, 83.33% and 91.67% in April and As and Ni were between TEL and PEL for 41.67% and 91.67%, which indicated that the concentration of them was likely to occasionally exhibit adverse effects on the ecosystem. Although the I geo , the F1 fraction or PERI of Cd in both seasons was higher at some sites, the results of sediment quality guidelines (SQGs) indicated that the biological effects of Cd were rarely observed in the studied area.

Suggested Citation

  • Baocui Liang & Xiao Qian & Shitao Peng & Xinhui Liu & Lili Bai & Baoshan Cui & Junhong Bai, 2018. "Speciation Variation and Comprehensive Risk Assessment of Metal(loid)s in Surface Sediments of Intertidal Zones," IJERPH, MDPI, vol. 15(10), pages 1-16, September.
    • Handle: RePEc:gam:jijerp:v:15:y:2018:i:10:p:2125-:d:172262
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    References listed on IDEAS

    as
    1. Fajin Chen & Jing Lin & Bihua Qian & Zhai Wu & Peng Huang & Kai Chen & Tianyao Li & Minggang Cai, 2018. "Geochemical Assessment and Spatial Analysis of Heavy Metals in the Surface Sediments in the Eastern Beibu Gulf: A Reflection on the Industrial Development of the South China Coast," IJERPH, MDPI, vol. 15(3), pages 1-12, March.
    2. Hong Yao & Xin Qian & Hailong Gao & Yulei Wang & Bisheng Xia, 2014. "Seasonal and Spatial Variations of Heavy Metals in Two Typical Chinese Rivers: Concentrations, Environmental Risks, and Possible Sources," IJERPH, MDPI, vol. 11(11), pages 1-19, November.
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