厦门杏林湾表层沉积物重金属污染特征及潜在生态风险评价

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Abstract

Concentration data of heavy metals, organic carbon and sulfides in surface sediments of Xinglin Bay were processed using correlation analysis and factor analysis. Highly positive linear correlations among concentrations of heavy metals were observed: Cu with Ni(r=0.786, P﹤0.05), Pb with Ni(r=0.783, P﹤0.05), Pb with Cr(r=0.937, P﹤0.01) and Cr with Hg(r=0.770, P﹤0.05). The results showed some lowly positive or negative correlations among heavy metals, organic carbon and sulfides. The results also indicated that heavy metals in sediments of Xinglin Bay had different anthropogenic sources and natural postdepositional processes from organic carbon and sulfides. The main sources of heavy metals in sediments were further explained by factor analysis. The potential ecological toxicity of heavy metals in Xinglin Bay was assessed based on index of potential ecological risk. Concentrations of these heavy metals posed a low potential ecological risk and had a low probability of being associated with adverse biological effects. The sequence of the degree of their potential ecological risks based on the average potential ecological risk factors (E_rⁱ) was: Hg > Pb > Cu > Cd > Ni > Cr.

Key words： Xinglin Bay heavy metals pollution ecological risk assessment

Received: 25 April 2013

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	MA Li
	LI Ji-peng
	LU Zhi-qiang

Cite this article:

MA Li,LI Ji-peng,LU Zhi-qiang. Pollution characteristics and potential ecological toxicity assessment of heavy metals in surface sediments of Xinglin Bay, Xiamen[J]. , 2013, 32(2): 212-217.

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http://www.ecolsci.com/EN/ OR http://www.ecolsci.com/EN/Y2013/V32/I2/212

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