摘要
以湖南省某冶炼厂污染场地为研究对象,通过单因子指数法、空间插值、人体健康风险评估模型、ALM模型,进行场地土壤重金属污染分析及健康风险评价,结果表明:场地土壤重金属主要污染因子为砷、锑、锌、铅,重污染区域分布在1~2.5m的土壤深度,砷污染单因子风险值最大为29.7,污染最严重,健康风险分析中砷的最大致癌风险和危害商为10-3和87.69,均处于不可接受水平,具有明显的致癌和非致癌风险,锑的非致癌风险在0.88~4.43之间,锌的非致癌风险均小于1,土壤铅含量引起成人孕妇腹中胎儿血铅水平超过10ug/dL的概率为1.9%~7.9%。
The research object, a smelter site located in Hunan Province, was evaluated by single factor index method, spatial interpolation, human health risk assessment and ALM model in order to explore the pollution degree and health risk of heavy metals in the site. The results showed that the main pollution factors of heavy metals in soil were As, Sb, Zn and Pb;the heavily polluted area distributed at the depth of 1-2.5 m in the soil. The most serious factor of pollution was As, with the single factor risk value up to 29.7. The results of human health risk assessment model showed that the maximum carcinogenic risk and hazard quotient of As were 10-3 and 87.69, unacceptable cancer risk and non-carcinogenic risk both existed. The non-carcinogenic risk of Sb ranged from 0.88 to 4.43, and the noncarcinogenic risk of zinc was less than 1. The probability of Pb content causing fetal blood lead level to exceed 10 ug/dL in the abdomen of pregnant women was 1.9%-7.9%.
作者
兰鹏鹏
万大娟
董法秀
王开心
LAN Peng-peng;WAN Da-juan;DONG Fa-xiu;WANG Kai-xin(College of Resources and Environmental Sciences, Hunan Normal University, Changsha 410081, PRC)
出处
《湖南农业科学》
2019年第4期59-63,共5页
Hunan Agricultural Sciences
作者简介
兰鹏鹏(1991-),男,湖北孝感市人,硕士研究生,研究方向:环境影响评价与规划;通讯作者:万大娟.
