摘要
在全面收集国内现有降尘重金属研究数据的基础上,应用美国EPA人体暴露风险评价方法对全国范围内降尘重金属进行健康风险评价。结果表明,As、Hg、Cd、Cr、Cu、Ni、Pb和Zn的平均值均高于中国土壤背景值,降尘重金属非致癌日均暴露剂量排序为:手、口接触摄入>皮肤吸收>呼吸吸入灰尘量;降尘重金属非致癌风险排序为:As>Pb>Cr>Hg>Cu>Cd>Zn>Ni;致癌重金属致癌风险排序为:Cr>As>Ni>Cd。儿童的非致癌风险指数与暴露剂量均大于成人,且As元素的儿童非致癌风险大于1。目前致癌重金属暂未对居民健康形成致癌风险。
The data of heavy metals were collected comprehensively from the studies on dust in China and carried out by using USEPA Health Risk Assessment Model. The health risk assessment results showed that the mean value of As, Hg, Cd, Cr, Cu, Ni, Pb and Zn were higher than the soil background value of China. The pathway ranking of non carcinogenic daily exposure dose of heavy metals in dust was hand - mouth contact intake 〉 skin absorption 〉 breathe inhale dust. Heavy metals non carcinogenic risk ranking was As 〉 Pb 〉 Cr 〉 Hg 〉 Cu 〉 Cd 〉 Zn 〉 Ni, carcinogenic risk ranking was Cr 〉 As 〉 Ni 〉 Cd. The non - carcinogenic risk and exposure dose of children were higher than adults and the non - cancer hazard of As was more than 1. The four carcinogenic metals had not formed carcinogenic risk to residents.
出处
《资源开发与市场》
CAS
CSSCI
2015年第7期803-807,共5页
Resource Development & Market
基金
国家自然科学基金资助项目(编号:41073075)
河南理工大学杰出青年基金项目(编号
J2013-06)
关键词
降尘
重金属
暴露剂量
健康风险评价
dust
heavy metal
exposure dose
health risk assessment
