基于农田土壤重金属生物可给性的人体健康风险评价

利用SBET方法研究了广西某流域农田土壤7种重金属的生物可给性,并评估了土壤重金属经口摄入途径对不同人群造成的健康风险。结果表明:土壤中重金属cd、Cu、Zn、Ni、Pb、As、Cr的生物可给性均值分别为70.55%、25.72%、10.89%、10.81%、7.78%、0.93%、0.71%。未经生物可给性修正的风险评价结果表明:土壤重金属对儿童的总非致癌风险(Ⅲ)和总致癌风险(Rt)分别为2.47和6.12×10^-5,对成人的肼和R。分别为0.32和4.01×10^-5,即对儿童有较大的风险。经生物可给性修正后,土壤重金属对儿童和成人的非致癌风险和致癌风险均大幅度降低,但对儿童依然有一定...

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Published in江西农业学报 Vol. 28; no. 12; pp. 110 - 114
Main Author 尹娟 邓超冰 王晓飞 许桂苹 邓渠成
Format Journal Article
LanguageChinese
Published 广西财经学院 管理科学与工程学院,广西 南宁 530003 2016
广西大学 轻工与食品工程学院,广西 南宁 530004%广西大学 轻工与食品工程学院,广西 南宁,530004%广西大学 轻工与食品工程学院,广西 南宁 530004
广西壮族自治区环境监测中心站,广西 南宁 530028%澳洲国立大学 克劳福德公共政策学院,澳大利亚 堪培拉,541004
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ISSN1001-8581
DOI10.19386/j.cnki.jxnyxb.2016.12.22

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Summary:利用SBET方法研究了广西某流域农田土壤7种重金属的生物可给性,并评估了土壤重金属经口摄入途径对不同人群造成的健康风险。结果表明:土壤中重金属cd、Cu、Zn、Ni、Pb、As、Cr的生物可给性均值分别为70.55%、25.72%、10.89%、10.81%、7.78%、0.93%、0.71%。未经生物可给性修正的风险评价结果表明:土壤重金属对儿童的总非致癌风险(Ⅲ)和总致癌风险(Rt)分别为2.47和6.12×10^-5,对成人的肼和R。分别为0.32和4.01×10^-5,即对儿童有较大的风险。经生物可给性修正后,土壤重金属对儿童和成人的非致癌风险和致癌风险均大幅度降低,但对儿童依然有一定的致癌风险。
Bibliography:36-1124/S
YIN Juan1,2, DENG Chao-bing2, WANG Xiao-fei2,3, XU Gui-ping2,3, DENG Qu-cheng4 ( 1. College of Management Science and Engineering, Guangxi University of Finance and Economics, Nanning 530003, Chi- na; 2. College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China; 3. Environmental Monito- ring Center of Guangxi Zhuang Autonomous Region, Nanning 530028, China; 4. Crawford School of Public Policy, Australian National University, Canberra 541004, Australia)
Farmland soil; Heavy metal; Bioaccessibility ; Health risk ; Assessment
The bioaccessibilities of 7 kinds of heavy metals in farmland soil in Guangxi were studied by using SBET method, and the risks of the oral intake of these heavy metals to the health of children and adults were assessed. The results indicated that the average bioaccessibility of Cd, Cu, Zn, Ni, Pb, As and Cr in the soil was 70.55%, 25.72%, 10.89%, 10.81%, 7.78%, 0.93% and 0.71%, respectively. Under the condition of not modifying the human health risk as
ISSN:1001-8581
DOI:10.19386/j.cnki.jxnyxb.2016.12.22