西南地区某钨锡矿区土壤重金属污染状况及健康风险评价研究

摘要

研究通过内梅罗综合污染指数法和改进的美国EPA人体暴露风险方法,评价中国西南地区某钨锡矿区土壤环境质量及土壤-人体的健康风险,其风险评估的结果具有指导意义.研究结果表明,矿区南侧、东侧土壤重金属对周边居民健康有一定的潜在风险,重金属砷对矿区居民健康构成威胁,这与当地多年钨锡矿采选活动中重金属的传输、扩散、积累密切相关.建议在土壤重污染区域开展土壤修复治理,改种非食物链经济作物.%Soil environmental quality and health risk of a tungsten-tin mining area in southwest China were researched by Nemero comprehensive pollution index method and improved EPA method, which was instructive to the risk assessment results.The results showed that heavy metal soil mine has a potential risk to the health of surrounding residents on the east side and the south side, heavy metals pose a threat to the health of the local residents in the mining area, with years of tungsten and tin mining activities in the selection of heavy metal transfer, diffusion and accumulation were closely related.Soil remediation management and growing non-food chain economic crops in heavy polluted area were proposed.