湖北省土壤重金属污染健康风险评价  

Assessment on health risk of heavy metal pollution in soil of Hubei province

作　　者：杨振[1,2] 丁启燕 宋万营 YANG Zhen;DING Qiyan;SONG Wanying(College of Urban and Environmental Sciences;Academy of Wuhan Metropolitan Area,Central China Normal University,Wuhan 430079,China)

机构地区：[1]华中师范大学城市与环境科学学院,湖北武汉430079 [2]华中师范大学武汉城市圈研究院,湖北武汉430079

出　　处：《国外医学（医学地理分册）》2018年第3期181-187,共7页Foreign Medical Sciences：Section of Medgeography

摘　　要：采用污染指数、健康风险评价、克里格插值等方法,对湖北省土壤重金属污染程度与健康风险分布特征进行研究,结果表明:(1)2015年,湖北省土壤重金属单因子污染指数差异较大,平均值由大到小依次为Hg、Cd、Cu、Zn、Pb、As、Cr,污染程度较高的采样点多位于鄂西、鄂中地区;(2)儿童和成人总非致癌风险指数均小于1,总致癌风险指数均介于10^(-6)~10^(-4)之间,说明土壤重金属污染导致的两类健康风险总体上可以接受;(3)儿童和成人总非致癌风险、总致癌风险均在省域空间上呈现"西高东低"分布格局,较高风险区主要分布在重金属背景值较高的鄂西、鄂西南地区。研究结果为省域尺度的土壤污染防治和健康风险防范提供了参考依据。The research is designed to carry out researches on both distribution characteristics of heavy metal pollution in soil and health risk index of Hubei province. Research tools involve pollution index, health risk assessment and kriging interpolation. The main findings are as follows： ①Difference is great among single factor index of heavy metal pollution in soil in the year 2015, with average pollution index Hg, Cd, Cu, Zn, Pb, As, Cr in a descending order. Pollution is more serious in certain sampling sites such as the western and the central area of Hubei province. ②Both non-carcinogenic risk index of children and adults are below 1 and carcinogenic risk index was between 10 -6 and 10 -4 , which indicate health risk by heavy mental in soil are both acceptable. ③Non-carcinogenic risk index of children and adults and carcinogenic risk on the provincial space are both large in the west and small in the east. Districts of greater risk are mainly in the west and southwest where the background value is higher. In summary, all the findings offer referential support for preventing soil pollution and reducing health risk as well on a provincial level.

关 键 词：土壤重金属 污染程度评价 致癌风险 非致癌风险 湖北省 

分 类 号：X820.4[环境科学与工程—环境工程]