三峡库区消落带土壤镉环境风险研究  

Environment Risk Assessment on Cadmium in Water Level Fluctuating Zone Soil of Three Gorges Reservoir

作　　者：罗毅[1] 敖亮[2] 罗财红[1] 张秀[1] 

机构地区：[1]重庆市环境监测中心,重庆401147 [2]重庆市环境科学研究院,重庆401147

出　　处：《环境科学与管理》2014年第5期180-183,共4页Environmental Science and Management

基　　金：重庆市重点区域土壤污染调查及污染防治对策研究;重庆市环保局;重庆市科委资助项目(2013.5)

摘　　要：以三峡库区重庆段消落带土壤为研究对象,通过采样、分析重金属含量,评价土壤潜在环境风险和健康风险。结果表明,消落带土壤中镉平均含量0.18 mg/kg,为重庆市土壤平均背景值(0.13 mg/kg)的1.4倍,表明消落带土壤具有一定的镉富集趋势。通过单因子评价、地累积指数评价和生态潜在污染指数评价,除个别地方受中等影响外,其它地方的镉的环境影响都在安全范围。通过健康风险评价,表明消落带土壤镉含量对人体基本不会产生危害。Soils from typical water level fluctuation zones were taken as investigation subject. The heavy metals were analyzed for soils potential risk assessment in this area. The results showed that the average concentration of cadmium in soils is 0. 18mg /kg,which is 1. 4 times higher than the background value of Chongqing,indicating that cadmium enrichment tendency in soils of water fluctuation areas. Through single-factor assessment,geo-accumulation index assessment and the ecological potential pollution index assessment,the research concluded that except for a few places were affect by medium impact,the environmental impact of other parts of places were in safety range. Furthermore,cadmium in water level fluctuation zones showed little or no harm on human body.

关 键 词：消落带 重金属 环境风险评价 

分 类 号：X820.4[环境科学与工程—环境工程]