| 华北地区某蔬菜基地土壤重金属污染特征及健康风险评价 |
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| 关键词:soil pollution heavy metals health risk assessment carcinogenic risk non-carcinogenic risk |
| 基金项目:中国地质调查局国土资源大调查项目(编号: 1212010634605) |
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| Pollution Characteristics and Health Risk Assessment of Heavy Metals in Soil of a Vegetable Base in North China |
| The concentrations of soil heavy metals in a vegetable base of North China were analyzed using field sampling and laboratory test. Environmental quality was evaluated by using the combination of single pollution index and comprehensive pollution index. Health risks of Cd, Hg, Cu and Pb caused by three exposure ways were assessed using USEPA health risk assessment model. The results show that the soil in the studied vegetable base has been polluted by the heavy metals of Cd, Hg, Cu in different degrees, whereas the average concentrations of heavy metals in soil have not exceeded Grade Ⅱ standard for soil environmental quality. The order of non-carcinogenic risks of three exposure ways of heavy metals in soil is Hg>Cu>Zn>Cd, and the non-carcinogenic risks and the carcinogen risks of metals are both lower than their threshold values. It is thus held that Cd can not be the direct threats to human health. |
| WANG Lan-hua,LI Ming-ming,ZHANG Ying,MA Wu-ming,CUI Kai-peng,WANG Zhi-qiang.2014.Pollution Characteristics and Health Risk Assessment of Heavy Metals in Soil of a Vegetable Base in North China[J].Acta Geoscientica Sinica,35(2):191-196. |
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