防城港临时性海洋倾倒区沉积物重金属污染现状及其生态风险评价

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Abstract

A comparative analysis on the content and distribution of heavy metals in surface sediments of Fangchenggang temporary marine dumping area was conducted, and the pollution status and the potential ecological risk of heavy metals in Fangchenggang temporary marine dumping area were studied using the pollution index and Hakanson potential ecological risk index method. The results showed that the content of Hg, Pb, As and Zn in surface sediments of dumping area surface sedimentary was increased significantly; the overall contamination level of heavy metals in surface sediments was intermediate in the dumping area; the levels of heavy metals pollution were followed from high to low by As (3.59)>Hg (2.19)>Pb (1.42)>Zn (1.20)>Cu (1.05)>Cd (0.91), and As was the key pollution factor; the overall level of potential ecological risk of heavy metals in the sediments was medium; the levels of potential ecological risks of heavy metals were followed from high to low by Hg (87.74)>As (35.89)>Cd (27.27)>Pb (7.08)>Cu (5.23)>Zn (1.20), and Hg was the key factor of potential ecological risk.

Key words： marine sediment heavy metal Fangchenggang dumping area assessment of potential ecological risk

Received: 25 April 2013

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	LIU Guo-qiang
	LIU Bao-liang
	Qing Shang-min
	Xing Su-kun

Cite this article:

LIU Guo-qiang,LIU Bao-liang,Qing Shang-min, et al. Assessment on pollution and potential ecological risk of heavy metals in the sediments of the temporary marine dumping area of Fangchenggang[J]. , 2013, 32(2): 177-182.

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http://www.ecolsci.com/EN/ OR http://www.ecolsci.com/EN/Y2013/V32/I2/177

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