毗邻铁矿的千山景区土壤重金属污染分析与评价

目的 了解毗邻铁矿的千山景区土壤重金属污染状况,为景区的环境治理和铁矿的排污规范提供数据基础和科学依据.方法 采用基于重金属质量浓度和毒性的双权重内梅罗综合污染指数法和潜在生态危害指数法对土壤质量进行评价.结果 采矿场周边区域重金属均未超标,属于安全区、轻微潜在危害级;排岩场和尾矿库周边土壤Pb含量明显偏高,尽管属于轻微的潜在危害级,但内梅罗评价结果 为警戒区,土壤存在恶化趋势;尾矿库至五佛顶区域属中重度污染区,Cd的单项潜在生态危害系数达到了强危害水平,且土壤各重金属有效态含量高于其他区域,植被生长受损症状已经凸显.结论 铁矿开采产生的重金属等有毒物质通过多种途径进入周边环境,已经对与之毗邻的千山景区土壤及植被造成了影响.

Analysis and Assessment on the Heavy Metal Pollution in Soil of Qianshan Scenic Adjacent to Iron Mine

The purpose of this article is to grasp the situation of heavy metal pollution in Qianshan scenic soil adjacent to iron mine and to provide data base and scientific basis for the environmental governance of scenic spot and sewage norms of iron mine.Methods of evaluation are potential ecological risk index and Nemerow index which are based on the concentration and toxicity of heavy metals.The results show that the soil around the mining in which heavy metals are all within the standard of regulations belongs...