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.
出处
《环境科学与管理》
CAS
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)
关键词
消落带
重金属
环境风险评价
level fluctuation
zone soil
environment risk
