采矿区周边土壤重金属元素含量分布情况及污染评价

Distribution and pollution assessment of heavy metal elements in soil around mining area

长期的采矿活动会使周围环境累积大量重金属,导致周边土壤受到严重污染,研究采矿区周边土壤重金属元素含量分布情况及污染评价。布设采矿区周边土壤剖面采样点,采集10处土壤样品进行详细记录。获取重金属含量与分布情况,得到重金属含量及分布规律与人类活动相关。地累积指数评价污染等级,计算土壤重金属元素污染指数。根据采矿区周边土壤金属含量结果,进行污染情况评价分析,以土壤背景值为标准的地累积指数法考虑地区差异和人为因素,其评价结果具有参考性。

Long term mining activities will accumulate a large number of heavy metals in the surrounding environment,resulting in serious pollution of the surrounding soil.The content distribution and pollution evaluation of heavy metals in the surrounding soil of the mining area are studied.The sampling points of soil profile around the mining area are arranged,and 10 soil samples are collected for detailed records.The content and distribution of heavy metals are obtained,and the content and distribution law of heavy metals are related to human activities.The pollution grade was evaluated by geoaccumulation index,and the pollution index of soil heavy metals was calculated.According to the results of soil metal content around the mining area,the pollution situation is evaluated and analyzed.The geoaccumulation index method based on soil background value considers regional differences and human factors,and the evaluation results are reference.