| Speciation, distribution, and potential ecological risk assessment of heavy metals in Xiamen Bay surface sediment |
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| 作者姓名： | LIN Cai LIU Yang LI Wenquan SUN Xiuwu JI Weidong |
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| 作者单位： | College of Ocean and Earth Science, Xiamen University, Xiamen 361005, China;Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China;Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China;College of Ocean and Earth Science, Xiamen University, Xiamen 361005, China;Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China;Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China |
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| 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. |
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| 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 us-ing 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 far-ther 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＆gt;Pb＆gt;Cu＆gt;Zn＆gt;Cr and the degree of pollution was Cd＆gt;Pb＆gt;Cu＆gt;Zn＆gt;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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| 关 键 词： | 生态风险评价 表层沉积物 重金属 厦门湾 形态 连续提取方法 评价方法 工业废水 |
| 收稿时间： | 2012/11/13 0:00:00 |
| 修稿时间： | 2013/1/30 0:00:00 |
Speciation, distribution, and potential ecological risk assessment of heavy metals in Xiamen Bay surface sediment |
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| LIN Cai,LIU Yang,LI Wenquan,SUN Xiuwu,JI Weidong.Speciation, distribution, and potential ecological risk assessment of heavy metals in Xiamen Bay surface sediment[J].Acta Oceanologica Sinica,2014,33(4):13-21. |
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| Authors: | LIN Cai LIU Yang LI Wenquan SUN Xiuwu and JI Weidong |
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| Institution: | 1.College of Ocean and Earth Science, Xiamen University, Xiamen 361005, China;Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China2.Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China3.College of Ocean and Earth Science, Xiamen University, 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. |
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| Keywords: | Xiamen Bay heavy metals speciation distribution ecological risk |
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