| LIN Cai,LIU Yang,LI Wenquan,SUN Xiuwu,JI Weidong. 2014. Speciation, distribution, and potential ecological risk assessment of heavy metals in Xiamen Bay surface sediment. Acta Oceanologica Sinica, 33(4):13－21 |
| Speciation, distribution, and potential ecological risk assessment of heavy metals in Xiamen Bay surface sediment |
| Speciation, distribution, and potential ecological risk assessment of heavy metals in Xiamen Bay surface sediment |
| Received:November 13, 2012 Revised:January 30, 2013 |
| DOI：10.1007/s13131-014-0453-2 |
| Key words:Xiamen Bay heavy metals speciation distribution ecological risk |
| 中文关键词: Xiamen Bay heavy metals speciation distribution ecological risk |
| 基金项目:The Fundamental Research Project of Third Institute Oceanography of State Oceanic Administration under contract No. 2011014; the Public Welfare Project of the State Oceanic Administration under contract No. 2011418015. |
| Author Name | Affiliation | E-mail | | LIN Cai | College of Ocean and Earth Science, Xiamen University, Xiamen 361005, China
Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China | | | LIU Yang | Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China | | | LI Wenquan | College of Ocean and Earth Science, Xiamen University, Xiamen 361005, China | wql@xmu.edu.cn | | SUN Xiuwu | Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China | | | JI Weidong | Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China | |
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| Abstract: |
| Based on the survey of surface sediment in Xiamen Bay in October 2011, the speciation, distribution, and potential ecological risk assessment of heavy metals (Cu, Pb, Zn, Cd, and Cr) in this area were studied using the sequential extraction method and ecological risk assessment method. The results indicated: (1) the total concentrations of these heavy metals were influenced by runoff, industrial wastewater, and sewage, and were all higher in the coastal area than the offshore area while the highest area of Pb was a little farther away from the coastal water due to atmosphere deposition; (2) sequential extractions suggested that Cu was mainly composed with residual and Fe/Mn-oxide bound fractions, Pb was bound to Fe/Mn-oxide, Zn and Cr were dominated by residual, and Cd bound to exchangeable and carbonate fractions; (3) the order of migration and transformation sequence was Cd >Pb >Cu >Zn >Cr and the degree of pollution was Cd >Pb >Cu >Zn >Cr; and (4) the ratios of the secondary and primary phases showed that Zn and Cr were both clean, Cu may be polluted, Pb was moderately polluted, while Cd was heavily polluted. |
| 中文摘要: |
| Based on the survey of surface sediment in Xiamen Bay in October 2011, the speciation, distribution, and potential ecological risk assessment of heavy metals (Cu, Pb, Zn, Cd, and Cr) in this area were studied using the sequential extraction method and ecological risk assessment method. The results indicated: (1) the total concentrations of these heavy metals were influenced by runoff, industrial wastewater, and sewage, and were all higher in the coastal area than the offshore area while the highest area of Pb was a little farther away from the coastal water due to atmosphere deposition; (2) sequential extractions suggested that Cu was mainly composed with residual and Fe/Mn-oxide bound fractions, Pb was bound to Fe/Mn-oxide, Zn and Cr were dominated by residual, and Cd bound to exchangeable and carbonate fractions; (3) the order of migration and transformation sequence was Cd >Pb >Cu >Zn >Cr and the degree of pollution was Cd >Pb >Cu >Zn >Cr; and (4) the ratios of the secondary and primary phases showed that Zn and Cr were both clean, Cu may be polluted, Pb was moderately polluted, while Cd was heavily polluted. |
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