北方稀土尾矿库周边重金属污染调查

发布时间：2018-03-12 16:49

本文选题：尾矿库　切入点：重金属　出处：《环境科学与技术》2016年04期 　论文类型：期刊论文

【摘要】：土壤重金属通过发生溶解、沉淀、吸附、氧化等物理、化学一系列反应后,最终以多种形态存在于土壤中,在植物体内富集,或转化为毒性更大的甲基化合物。调查了北方尾矿库周边的重金属污染的基本情况,对其表层土壤与植物中重金属Cu、Pb、Zn、Cd的含量进行了测定分析,结果表明,尾矿库周边土壤和植物中重金属含量偏高,趋势比较明显的因子有Pb、Zn、Cd,尾矿库周边土壤中Pb、Cd已达到污染限值且尾矿库周边植物中Pb的含量超过国家标准。植物受到影响进而影响人类的健康问题,利用风险评估技术对重金属进行健康风险评价,筛选污染严重的位点,针对尾矿库的重金属污染严重位点提出了相应的治理建议。
[Abstract]:After a series of physical and chemical reactions, such as dissolution, precipitation, adsorption, oxidation and so on, the heavy metals in the soil finally exist in the soil in a variety of forms and are enriched in the plant body. The pollution of heavy metals around the tailings reservoir in the north of China was investigated, and the contents of the heavy metal Cu PbPbZN in the topsoil and plants were determined and analyzed, the results showed that, The contents of heavy metals in the soil and plants around the tailings reservoir were relatively high. The main factors with obvious trend are Pb ~ (2 +) Zn ~ (2 +) CD, Pb ~ (2 +) in the soil around the tailings reservoir has reached the pollution limit, and the Pb content in the plants around the tailings reservoir is higher than the national standard. The plants are affected and the health problems of human beings are affected. The health risk assessment of heavy metals was carried out by using risk assessment technology to screen the seriously polluted sites and the corresponding treatment suggestions were put forward for the heavy metal pollution sites in the tailings reservoir.
【作者单位】：内蒙古科技大学内蒙古自治区白云鄂博矿多金属资源综合利用重点实验室;内蒙古科技大学数理与生物工程学院;
【基金】：国家环保部公益性行业科研专项项目(201309005)
【分类号】：X753

【相似文献】