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Pollution characteristics and potential ecological toxicity assessment of heavy metals in surface sediments of Xinglin Bay, Xiamen
MA Li, LI Ji-peng, LU Zhi-qiang*
1. Third Institute of Oceanography, SOA, Xiamen 361005, China; 2. Fisheries College of Jimei University, Xiamen 361021, China
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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 (Eri) was: Hg > Pb > Cu > Cd > Ni > Cr.

Key wordsXinglin Bay      heavy metals pollution      ecological risk      assessment     
Received: 25 April 2013     
:  X82  
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MA Li
LI Ji-peng
LU Zhi-qiang
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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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