热带作物学报2018，Vol.39Issue(1)：189-196,8.DOI:10.3969/j.issn.1000-2561.2018.01.029
琼北土壤重金属高背景值区人群健康风险评价
Health Risk Assessment of Heavy Metal in Soils in the North of Hainan Province with High Background Value
摘要
Abstract
In this study,the concentrations of heavy metals (e.g.Pb,Cd,Cu,Zn and Ni) in the farmland and the surrounding agricultural products such as vegetables,fruits,rice and coarse cereals were investigated in northern Hainan where higher concentrations of heavy metals are related to the mother rocks.The health risk assessment model recommended by United States Environmental Protection Agency (USEPA) was used to assess the potential health risks of heavy metals to local inhabitants (adult males,females and children) via dietary consumption of the selected agricultural products.The results showed that:(1) The concentration of Pb,Cd,Cu,Zn and Ni in the soil and four kinds of agricultural products in the studied area exceed the corresponding values according to national standard.(2) Among the five types of excessive heavy metals in the selected agricultural products,copper induces higher danger to adults than that of zinc,and followed by cadmium,nickel,and lead (i.e.HICu＞HIZn＞HICd＞HINi＞HIPb) via dietary intake.By comparison,children stand more danger than adults,and the degree of health risks caused by the heavy metals followed an order of HINi＞HICd＞HIZn＞HIPb＞HICu.(3) The health risk caused by direct intake of vegetables is greater than that of rice,coarse cereals and fruit,respectively.(4) The carcinogenic risk of lead caused by daily intake of these agricultural products was within the acceptable limits in the investigated region,except for some areas.The carcinogenic risks of copper caused by daily intake of vegetables,rice and coarse cereals were higher than the acceptable level (i.e.10-6),which indicated that higher health risk would be caused by long-term intake of the vegetables,fruits,rice and coarse cereals from the investigated areas.关键词
高背景值区土壤/重金属/农产品/健康风险评价Key words
soils with high background values/heavy metals/agricultural products/health risk assessment分类
资源环境引用本文复制引用
李佳桐,李雪,葛成军,俞花美,孙宏飞,陈淼..琼北土壤重金属高背景值区人群健康风险评价[J].热带作物学报,2018,39(1):189-196,8.基金项目
国家自然科学基金项目(No.21467008) （No.21467008）
海南省重大科技计划项目(No.ZDKJ2017002) （No.ZDKJ2017002）
海南省自然科学基金(No.212012). （No.212012）
