典型重金属污染地区蔬菜中重金属含量及健康风险

发布时间：2019-05-19 11:15

【摘要】：在大冶市典型重金属污染地区,选择罗家桥街办作为污染区、茗山乡作为对照区,通过采集土壤和蔬菜样品,分析5种重金属(Cu、Zn、As、Cd、Pb)的含量,评价重金属对当地居民的健康风险,评价参数根据当地居民调查得到。结果表明,污染区土壤样品的5种重金属的平均值均高于背景值,对照区土壤样品的5种重金属的平均值与背景值差异不显著或低于背景值。污染区蔬菜样品的5种重金属的平均值也基本都高于对照区。因此,污染区土壤已经受到了重金属的污染,对照区土壤几乎未受到重金属的污染。健康风险评价结果表明,污染区人群面临着非致癌风险和致癌风险,而对照区健康风险较小。从年龄层看,对非致癌风险抵抗力最弱的是儿童,而对致癌风险抵抗力最弱的是成人。污染区最主要的风险元素是Cd和As。
[Abstract]:In the typical heavy metal contaminated area of Daye City, Luojiaqiao Street was selected as the polluted area and Mingshan Township as the control area. The contents of five kinds of heavy metals (Cu,Zn,As,Cd,Pb) were analyzed by collecting soil and vegetable samples. The health risk of heavy metals to local residents was evaluated, and the evaluation parameters were obtained according to the survey of local residents. The results showed that the average value of five heavy metals in soil samples in polluted area was higher than that in background value, but the difference between the average value and background value of five heavy metals in soil samples in control area was not significant or lower than that in background value. The average value of five kinds of heavy metals in vegetable samples in polluted area was also higher than that in control area. Therefore, the soil in the polluted area has been polluted by heavy metals, and the soil in the control area is almost not polluted by heavy metals. The results of health risk assessment showed that the population in polluted area faced non-carcinogenic risk and carcinogenic risk, while the health risk in the control area was smaller. In terms of age, children are the least resistant to non-carcinogenic risks and adults are least resistant to carcinogenic risks. The most important risk elements in contaminated areas are Cd and As..
【作者单位】：中南财经政法大学环境与健康研究中心;中南财经政法大学环境管理与政策研究所;Department
【基金】：中国博士后科学基金面上项目(No.2015M582316) 湖北省教育厅人文社科基金项目(No.17YJAZH105)
【分类号】：R12;X53

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