| 重庆市清水溪河流沉积物重金属污染及潜在生态风险评价 |
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| 引用本文： | 何太蓉,刘存东,庄红娟.重庆市清水溪河流沉积物重金属污染及潜在生态风险评价[J].环境工程学报,2009,3(7):1329-1332. |
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| 作者姓名： | 何太蓉 刘存东 庄红娟 |
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| 作者单位： | 1. 重庆大学三峡库区生态环境教育部重点实验室,重庆,400045;重庆师范大学地理科学学院,重庆,400047
2. 重庆师范大学地理科学学院,重庆,400047 |
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| 基金项目： | 重庆大学三峡库区生态环境教育部重点实验室2007年度访问学者基金项目（KLVF-2007-4）；重庆市教委科技资助项目（KJ080803）；重庆市软科学计划项目（CSTC2008CE9095） |
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| 摘 要： | 采用单因子指数法和Hakanson潜在生态风险指数法，通过分析清水溪流域18个采样点沉积物中典型重金属污染物Cd、Cr、Cu、Pb和Zn的含量，定量确定了清水溪沉积物中重金属的污染程度和潜在生态风险程度。结果表明，清水溪流域污染非常严重，上中游河段受到重金属的高强度污染，主要的重金属污染因子为Zn，污染因子的高低顺序为：Zn>Cu>Cr>Cd>Pb；潜在生态风险指数RI平均值为255.58，清水溪处于高值潜在生态风险，且上中游河段潜在生态风险指数很高，主要的潜在生态风险因子为Cd，潜在生态风险因子的大小顺序为：Cd>Cu>Cr>Zn>Pb。
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| 关 键 词： | 河流沉积物 重金属污染 潜在生态风险 清水溪 |
Pollution of heavy metals in the sediments from Qingshui Stream in Chongqing and its potential ecological risk assessment |
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| He Tairong,Liu Cundong and Zhuang Hongjuan.Pollution of heavy metals in the sediments from Qingshui Stream in Chongqing and its potential ecological risk assessment[J].Techniques and Equipment for Environmental Pollution Control,2009,3(7):1329-1332. |
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| Authors: | He Tairong Liu Cundong and Zhuang Hongjuan |
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| Institution: | 1.Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment;Ministry of Education;Chongqing University;Chongqing 400045;China;2.School of Geography Science;Chongqing Normal University;Chongqing 400047;China |
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| Abstract: | Through analyzing the contents of the typical heavy metal pollutants(Cd,Cr,Cu,Pb and Zn) in the sediments of 18 sample sites from Qingshui Stream catchment,this paper used the index techniques of single factor and Hakanson ecological risk to quantitatively determine the extent of pollution and the potential ecological risks of heavy metal in the sediments of Qingshui Stream.The results showed that: heavy metal pollution in Qingshui Stream catchment was very serious by integrated pollution index,and the uppe... |
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| Keywords: | river sediment heavy metal pollution potential ecological risk Qingshui Stream |
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