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| 重庆市清水溪底泥中镉污染的潜在生态风险评价 | |
| 引用本文： | 何太蓉,刘存东,李贤良.重庆市清水溪底泥中镉污染的潜在生态风险评价[J].中国环境监测,2009,25(5). |
| 作者姓名： | 何太蓉 刘存东 李贤良 |
| 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 3. 重庆出入境检验检疫局理化实验室,重庆,400020 |
| 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(KLVF-2007-4);;重庆市教委科技项目(KJ080803);;重庆市软科学计划项目(CSTC2008CE9095) |
| 摘 要： | 采用地累积指数和Hakanson潜在生态风险指数法,通过分析清水溪18个采样点底泥中典型重金属镉的含量,定量确定了清水溪底泥中重金属镉的污染程度和潜在生态风险程度。结果表明,清水溪流域镉污染比较严重,上游比下游污染严重,而且在新桥到高滩岩段受到重金属镉的中强度污染,对周围环境存在极高的镉生态风险。在清水溪干流上采样点底泥中镉的质量浓度范围在0.38~1.48mg/kg之间,平均值0.88mg/kg,各支流底泥中镉的质量浓度范围为0.51~1.08mg/kg。对于清水溪各支流镉的污染程度与潜在生态风险程度由高到低的排序为杨家沟>金竹沟>芭蕉沟>关井沟>石碾盘沟。 |
| 关 键 词： | 底泥 镉污染 生态风险 清水溪 |
Pollution of Heavy Metals-Cadmium in the Sediments from Qingshui Stream and its Potential Ecological Risk Assessment |
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| HE Tai-rong,et al.Pollution of Heavy Metals-Cadmium in the Sediments from Qingshui Stream and its Potential Ecological Risk Assessment[J].Environmental Monitoring in China,2009,25(5). | |
| Authors: | HE Tai-rong~ |
| Institution: | 1;2;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 |
| Abstract: | By using the geo-acumulation index and Hakanson potential ecological risk index,anaylsed the heavy metal material-Cadmium in the dediments of 18 samples collected from streams and rivers.The results showed that Cadmium pollution is serious in stream and rivers.The pollutants are more serious in the upstream than in the downstream.The section of Xinqiao to Gaotanyan received heavy metal cadmium,which has the extremely high ecology risk to the environment.The sample collected from the main stream which cadmiu... |
| Keywords: | Rivers sediment Cadmium pollution Ecology risk Qingshui Stream |
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