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| 四川省安宁河沉积物重金属污染特征及其生态风险分析 |
| Pollution Characteristics and Potential Ecological Risk Assessment for Heavy Metals in Anning River,Sichuan Province, China |
| 投稿时间：2015-06-16 修订日期：2015-12-11 |
| DOI：10.14050/j.cnki.1672-9250.2016.04.012 |
| 中文关键词: 安宁河;重金属;地累积指数法;潜在生态危害指数法 |
| 英文关键词: Aningriver;heavy metal;sediment enrichment factor;potential ecological risk index |
| 基金项目:四川省安宁河沉积物重金属污染特征及其生态风险分析王雪梅 四川省教育厅项目(11ZB111); 四川省环境保护厅项目(2011HB005); 凉山州应用技术研究与开发项目 |
| 作者 | 单位 | | 王雪梅1, 兰青2, 王洪波3, 胡金朝1 | 1. 西昌学院 动物科学学院, 四川 西昌 615013
2. 四川省地矿局攀西地质队, 四川 西昌 615000
3. 四川省凉山州环境监测站, 四川 西昌 615000 |
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| 中文摘要: |
| 本研究采集安宁河干流的沉积物样品,分析了12种重金属元素As、Hg、Cr、Cu、Zn、Pb、Cd、Fe、Mn、Ba、Ti、V含量的空间变化,并采用了地累积指数法和潜在生态危害指数法评价其重金属污染分布现状。结果表明,沉积物中各种重金属均有不同程度的富集,重金属污染主要分布在矿业最为发达的中游河段及下游段,其中Ti、Ba、Mn、Cd、Zn地质累积指数较高,出现中度及以上污染; 安宁河重金属平均潜在生态风险已达中等程度,存在较强的生态危害,其中Cd表现出强度的生态风险(Ei值为46.33~366.84),应引起重视。 |
| 英文摘要: |
| In order to investigate heavy metals contamination status in Anning River, Sichuan Province, China, 9 sediment samples were collected respectively for analyzing As, Hg, Cr, Cu, Zn, Pb, Cd, Fe, Mn, Ba, Ti and V. Two assessment methods(sediment enrichment factor and potential ecological risk index)were employed to evaluate the severity of contamination of various heavy metals in the river. Results of these assessments show that the concentration of all heavy metals in sediment samples is higher than the background value of Sichuan Province and Yangzi River system. The middle and lower reaches have been heavily polluted by mining-induced heavy metals. The sediment enrichment factors of Ti, Ba, Mn, Cd and Zn are higher with massive pollution, and show middle and above grade pollution. The average value of RI reaches middle-grade risk level which is very harmful to environment. Especially, the ecological risk coefficient(Ei) of Cd ranges from 46.33 to 366.84 and reaches high-grade risk level, which should be paid more attention. |
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