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Position: Home > Articles > Pollution of Heavy Metals in Sediment of Dongting Lake and Their Ecological Risk Assessment Acta Agriculturae Jiangxi 2013 (6) 119-121

洞庭湖沉积物的重金属污染及生态风险评估

作  者:
左兰兰;赵运林;许永立
单  位:
湖南农业大学生物科学技术学院
关键词:
洞庭湖;重金属;沉积物;生态风险;污染
摘  要:
根据2003~2010年的数据,分析和评价了洞庭湖沉积物中重金属污染及生态风险。各重金属平均含量的顺序为:Zn>Cr>Cu>Pb>As>Cd>Hg。采用Muller地积累指数法的评价结果为:Zn处于基本无污染状态;As、Cr、Pb处于轻度污染状态;Hg、Cu处于偏中度污染状态;Cd处于偏重度污染状态。采用Hakanson潜在生态风险指数法的分析结果为:As、Cr、Pb、Cu、Zn均处于低潜在生态风险水平;Hg处于较高潜在生态风险水平;Cd处于极高潜在生态风险水平。
译  名:
Pollution of Heavy Metals in Sediment of Dongting Lake and Their Ecological Risk Assessment
作  者:
ZUO Lan-lan,ZHAO Yun-lin*,XU Yong-li(College of Bioscience and Biotechnology,Hunan Agricultural University,Changsha 410128,China)
关键词:
Dongting Lake;Heavy metal;Sediment;Ecological risk;Pollution
摘  要:
Based on the investigative data of the year 2003 ~ 2010,the paper analyzed and evaluated the pollution of heavy metals and their ecological risk in the sediment of the Dongting Lake.The order of the average concentration of heavy metals was: Zn > Cr > Cu > Pb > As > Cd > Hg.The assessment results by using Muller's geo-accumulation index method were that: Zn was at little pollution level;As,Cr and Pb were all at light pollution level;Hg and Cu were all at middle pollution level;Cd was at heavy pollution level.The analysis results by using Hakanson's potential ecological risk index method were that: As,Cr,Pb,Cu and Zn were all at low potential ecological risk level;Hg was at high potential ecological risk level;Cd was at extremely high potential ecological risk level.

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