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| 滇池外海底泥重金属污染分布特征及风险评价 | |
| 引用本文： | 李梁,胡小贞,刘娉婷,周北海,金相灿.滇池外海底泥重金属污染分布特征及风险评价[J].中国环境科学,2010,30(Z1):46-51. |
| 作者姓名： | 李梁 胡小贞 刘娉婷 周北海 金相灿 |
| 作者单位： | 1. 中国环境科学研究院国家环境保护湖泊污染控制重点实验室,北京,100012;北京科技大学环境工程系,北京,100083 2. 中国环境科学研究院国家环境保护湖泊污染控制重点实验室,北京,100012 3. 北京科技大学环境工程系,北京,100083 |
| 基金项目： | 国家污染控制与治理科技重大专项课题，国家高技术研究发展计划项目 |
| 摘 要： | 采用底泥质量标准(SQGs)法和潜在生态风险(RI)法对滇池外海22个点位20cm柱状底泥中重金属As、Hg、Cr、Cd、Pb、Zn和Cu浓度分布及潜在生态风险进行了研究.结果表明,Pb的最高浓度达319mg/kg,9个点位超过风险评价中值或高概率效应浓度,是超标最严重的重金属.各元素污染程度顺序为PbCuHgAsCdCrZn.Pb、Cu、Hg的污染层为15~20cm,其余重金属污染层为10~15cm.潜在生态风险(RI)评价表明,滇池外海底泥重金属污染总体处于中等生态风险水平,北部为"强"等级,潜在风险顺序为HgCdAsPbCuCrZn.两种方法的评价结果具有一定的差异性,在实际应用中需结合起来使用.此外,滇池底泥重金属浓度与潜在生态风险表现出一致的区域性差异,即北部大于南部,西部大于东部. |
| 关 键 词： | 滇池外海底泥 重金属 底泥质量标准 潜在生态风险 |
| 收稿时间： | 2009-10-30; |
Heavy metals distribution characteristics and potential ecological risk evaluation in the sediment of outer area of Lake Dianchi |
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| LI Liang,HU Xiao-zhen,LIU Ping-ting,ZHOU Bei-hai,JIN Xiang-can.Heavy metals distribution characteristics and potential ecological risk evaluation in the sediment of outer area of Lake Dianchi[J].China Environmental Science,2010,30(Z1):46-51. | |
| Authors: | LI Liang HU Xiao-zhen LIU Ping-ting ZHOU Bei-hai JIN Xiang-can |
| Institution: | LI Liang1,2,HU Xiao-zhen1,LIU Ping-ting1,ZHOU Bei-hai2,JIN Xiang-can1(1.The State Key Laboratory of Lake Pollution Control,Chinese Research Academy of Environmental Science,Beijing 100012,China,2.Department of Environmental Engineering,University of Science , Technology Beijing,Beijing 100083,China) |
| Abstract: | Heavy metals such as As,Hg,Cr,Cd,Pb,Zn and Cu in the 20cm sediment core of 22 sampling sites in the outer area of Lake Dianchi were analyzed.The results evaluated using sediment quality guidelines(SQGs),showed that the highest content of Pb was 319mg/kg,which seriously exceeded the guidelines values,and 9 sampling sites exceeded ERM/PEL values.The degree of contamination in descending order was Pb>Cu>Hg>As>Cd>Cr>Zn,the content of Pb,As and Cu was still high in the 15~20cm sediment core,and the depth of cont... |
| Keywords: | sediment of outer area of Lake Dianchi heavy metals sediment quality guidelines (SQGs) potential ecological risk index (RI) |
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