大冶矿区土壤-蔬菜重金属污染特征及健康风险评价  

Characteristics of soil-vegetable pollution of heavy metals and health risk assessment in Daye mining area

作　　者：孙清斌[1,2] 尹春芹[2] 邓金锋[2] 张丹锋[2] 

机构地区：[1]土壤与农业可持续发展国家重点实验室,中国科学院南京土壤研究所,南京210008 [2]湖北理工学院环境科学与工程学院,黄石435003

出　　处：《环境化学》2013年第4期671-677,共7页Environmental Chemistry

基　　金：土壤与农业可持续发展国家重点实验室开放基金(0812201225);湖北理工学院引进人才项目(10yjz04R);湖北省教育厅科学技术研究计划优秀中青年人才项目(Q20093001);湖北省教育厅科学技术研究计划指导性项目(B20093003);湖北理工学院教学研究项目(201012)资助

摘　　要：对大冶铜绿山、铜山口矿区和非矿区的土壤、蔬菜重金属污染特征进行了分析,利用单因子污染指数及内梅罗综合污染指数法评价了土壤环境质量,并进一步分析了蔬菜重金属暴露接触对当地居民的健康风险.结果表明,矿区附近蔬菜地土壤均受到不同程度上的重金属污染,尤其是Cu和Cd的污染.非矿区蔬菜地土壤受到重金属的中度污染,主要是Cd污染.矿区蔬菜中Pb和Cd的含量均超过中国食品安全卫生标准,非矿区部分蔬菜中Pb和Cd的含量超标.矿区居民食用各种蔬菜均会产生Pb和Cd的健康风险.青少年儿童食用蔬菜比成年人更易受到重金属的危害.The characteristics of heavy metal pollution in soils and vegetables from Tonglvshan, Tongshankou mining area and non-mining area were analyzed by using single factor index method, Nemero integrative pollution index method and different evaluation standards of pollution for comparison. Furthermore, the potential health risk of local people was also elucidated with intake of heavy metals through consumption contaminated vegetables. The results showed that the serious heavy metal pollutions were found based on both soil natural background values and China National Standard （CNS） as evaluation standard in vegetable soils near the mining area, especially to Cu and Cd. And moderate pollution levels of heavy metals, in which Cd is the main contamination element, were also demonstrated in vegetable soils from non-mining area. In addition, Pb and Cd contents in vegetables from mining area are much higher than that of Chinese food safety and hygiene standards, and this circumstance also happened in some vegetables from non-mining. Pb and Cd health risks in local people of mining area would be produced with intake of contaminated edible vegetables. And the hazards of heavy metals to young children are more susceptible than adults with intake of edible vegetables.

关 键 词：矿区 重金属 土壤-蔬菜 健康风险 

分 类 号：X833[环境科学与工程—环境工程] X820.4