Ecological risk assessment of heavy metals in desulfurized seawater discharged from a coal-fired power plant in Qingdao

© 2024. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.

Bibliographische Detailangaben
Veröffentlicht in:Ecotoxicology (London, England). - 1992. - 33(2024), 3 vom: 08. Apr., Seite 239-252
1. Verfasser: Feng, Yongliang (VerfasserIn)
Weitere Verfasser: Ru, Yiran, Wang, Jun, Zhang, Xiaona, Tian, Hua, Lei, Shuhe, Zhao, Ziang, Ru, Shaoguo
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2024
Zugriff auf das übergeordnete Werk:Ecotoxicology (London, England)
Schlagworte:Journal Article Coal-fired power plant Desulfurization effluent Ecological risk assessment Heavy metals Native species Species sensitivity distribution Cadmium 00BH33GNGH Lead mehr... 2P299V784P Metals, Heavy Mercury FXS1BY2PGL Coal Soil Soil Pollutants
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520 |a Despite the prevalence of discharge of large volumes of heavy-metal-bearing seawater from coal-fired power plants into adjacent seas, studies on the associated ecological risks remain limited. This study continuously monitored concentrations of seven heavy metals (i.e. As, Cd, Cr, Cu, Hg, Pb, and Zn) in surface seawater near the outfall of a coal-fired power plant in Qingdao, China over three years. The results showed average concentrations of As, Cd, Cr, Cu, Hg, Pb, and Zn of 2.63, 0.33, 2.97, 4.63, 0.008, 0.85, and 25.00 μg/L, respectively. Given the lack of data on metal toxicity to local species, this study investigated species composition and biomass near discharge outfalls and constructed species sensitivity distribution (SSD) curves with biological flora characteristics. Hazardous concentrations for 5% of species (HC5) for As, Cd, Cr, Cu, Hg, Pb, and Zn derived from SSDs constructed from chronic toxicity data for native species were 3.23, 2.22, 0.06, 2.83, 0.66, 4.70, and 11.07 μg/L, respectively. This study further assessed ecological risk of heavy metals by applying the Hazard Quotient (HQ) and Joint Probability Curve (JPC) based on long-term heavy metal exposure data and chronic toxicity data for local species. The results revealed acceptable levels of ecological risk for As, Cd, Hg, and Pb, but unacceptable levels for Cr, Cu, and Zn. The order of studied heavy metals in terms of ecological risk was Cr > Cu ≈ Zn > As > Cd ≈ Pb > Hg. The results of this study can guide the assessment of ecological risk at heavy metal contaminated sites characterized by relatively low heavy metal concentrations and high discharge volumes, such as receiving waters of coal-fired power plant effluents 
650 4 |a Journal Article 
650 4 |a Coal-fired power plant 
650 4 |a Desulfurization effluent 
650 4 |a Ecological risk assessment 
650 4 |a Heavy metals 
650 4 |a Native species 
650 4 |a Species sensitivity distribution 
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650 7 |a Metals, Heavy  |2 NLM 
650 7 |a Mercury  |2 NLM 
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650 7 |a Coal  |2 NLM 
650 7 |a Soil  |2 NLM 
650 7 |a Soil Pollutants  |2 NLM 
700 1 |a Ru, Yiran  |e verfasserin  |4 aut 
700 1 |a Wang, Jun  |e verfasserin  |4 aut 
700 1 |a Zhang, Xiaona  |e verfasserin  |4 aut 
700 1 |a Tian, Hua  |e verfasserin  |4 aut 
700 1 |a Lei, Shuhe  |e verfasserin  |4 aut 
700 1 |a Zhao, Ziang  |e verfasserin  |4 aut 
700 1 |a Ru, Shaoguo  |e verfasserin  |4 aut 
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