| 巢湖沉积物镉等重金属地球化学分布、赋存特征及危害性研究 |
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| 引用本文： | 陈富荣.巢湖沉积物镉等重金属地球化学分布、赋存特征及危害性研究[J].安徽地质,2009,19(3):200-203,189. |
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| 作者姓名： | 陈富荣 |
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| 作者单位： | 安徽省地质调查院,安徽合肥,230001 |
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| 基金项目： | 中国地质调查局国土资源大调查项目，"安徽省生态农业地质调查评价方法技术研究与应用"创新团队项目资助 |
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| 摘 要： | 对巢湖表层沉积物中8种重金属元素的分布特征和生态风险进行了研究和评价。结果表明：沉积物中Hg、Cd含量总体高于背景值，其中西部沉积物中重金属含量明显高于中东部湖区，并表现出多元素复合污染特征；Hakanson潜在生态危害指数表明巢湖沉积物重金属生态危害变化于轻微-强危害程度，以西北部湖区最为严重，Hg和Cd是主要影响因子，其它元素生态危害性较小；沉积物中As、cd、Hg、Pb元素主要以残渣态（非有效态）形式存在，但沉积物中腐殖酸态的As和Hg、铁锰氧化态的Pb、离子态的Cd占总量比例较高，其中又以Cd易利用态比例最高，生物有效性最强，具有较高的生态危害风险。
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| 关 键 词： | 镉等重金属 地球化学分布 赋存特征 危害性 表层沉积物 巢湖 |
DISTRIBUTION OF HEAVY METALS IN THE CHAO LAKE SEDIMENTS AND THE ECOLOGICAL RISK |
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| CHEN Fu-rong.DISTRIBUTION OF HEAVY METALS IN THE CHAO LAKE SEDIMENTS AND THE ECOLOGICAL RISK[J].Geology of Anhui,2009,19(3):200-203,189. |
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| Authors: | CHEN Fu-rong |
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| Institution: | CHEN Fu-rong(Anhui Institute of Geological Suevey,Hefei 230001,Anhui,China) |
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| Abstract: | The distribution characteristics of 8 heavy metal elements in the superficial sediments of the Chao Lake and their ecological risk were studied and evaluated in this paper.It is indicated that the Hg and Cd contents in sediments are generally higher than the background values,and heavy metals in western sediments are evidently higher than those in middle and eastern lake area and show joint contamination by more than one element.The Hakanson potential ecological hazard index suggest that heavy metals in the... |
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| Keywords: | heavy metal distribution ecological hazard risk sediments Chao Lake |
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