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| 獐子岛贝类养殖区表层沉积物重金属分布特征及潜在生态危害评价 |
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谭志军1,2, 翟毓秀1,2, 杨 帆1,2, 王 军1,2, 宁劲松1,2, 赵艳芳1,2, 尚德荣1,2
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1.农业部水产品质量安全检测与评价重点实验室, 中国水产科学研究院 黄海水产研究所;2.国家水产品质量监督检验中心
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| 摘要: |
| 研究了獐子岛虾夷扇贝养殖区表层沉积物中Pb、Cd、Cu、Zn 等有害重金属的含量及时空分布,并采用瑞典学者Hakanson 的潜在生态危害指数法对该区域重金属的分布特征和生态风险进行了分析。结果表明, 獐子岛海域表层沉积物Pb、Cd、Cu、Zn 含量均是在夏季较低、冬季较高, 最高含量分别为9.17±2.05、0.06±0.014、6.71±2.01、24.94 mg/kg±5.21 mg/kg, 远低于国家一类海域标准及Hakanson提出的全球工业化前沉积物中相应污染物的背景值。综合评价, 该海域表层沉积物中重金属的污染程度不具有生态风险性, 整个养殖区养殖环境良好, 为优良的贝类增养殖海域。 |
| 关键词: 贝类养殖 表层沉积物 重金属 潜在生态危害 |
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| 基金项目:中央级基本科研业务费专项资金资助项目(20603022011004); 国家海洋局近岸海域生态环境重点实验室开放基金(200901) |
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| The distribution and potential ecological risk of heavy metals in surface sediments from the shellfish culture areas of Zhangzi Island |
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| Abstract: |
| The content and distribution of heavy metals (Pb, Cd, Cu, Zn) in the surface sediment samples collected from the shellfish culture area of Zhangzi Island, were analysed. Their potential ecological risks were assessed with the method presented by Lars Hakanson. The results showed that the contents of Pb, Cd, Cu and Zn were higher in winter and lower in summer, and the highest content is 9.17±2.05, 0.06±0.014, 6.71±2.01 and 24.94±5.21 mg/kg respectively, which is far lower than that in other areas and also the national criterion. Therefore, there was no potential economical risk of the heavy metals in this area and the environmental quality of culture was very well. |
| Key words: shellfish culture surface sediment heavy metals potential ecological risk |