Primary research on health risk assessment of heavy metals in road dust of Shanghai.
Primary research on health risk assessment of heavy metals in road dust of Shanghai.
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
Chang Jing;Liu Min;Li Xianhua;Lin Xiao;W. Lili;Gao Lei
中科院分区：
文献类型：
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作者：
Chang Jing;Liu Min;Li Xianhua;Lin Xiao;W. Lili;Gao Lei
采用美国EPA健康风险评估模型，对道路灰尘中重金属对儿童的暴露进行了风险评估。在上海市文教区、居民区和城市广场采集了48个道路灰尘样品。Zn、Pb、Cu、Cd的含量超过土壤背景值的6-8倍，Cr、Ni的含量超过土壤背景值的2-3倍。所有金属的平均日摄入量的尘埃颗粒远高于吸入的再悬浮的尘埃颗粒和皮肤接触的尘埃颗粒。对于所有金属来说，最高风险水平似乎与摄入灰尘颗粒的途径有关。非致癌危险性指数依次为Pb Cr Ni Cu Zn Cd，致癌危险性指数依次为Cr Ni Cd。各金属元素的非致癌危害指数和致癌风险均低于其阈值，表明上海市道路灰尘中的金属元素对儿童健康的不良影响相对较轻。
The exposure and risk assessment of heavy metals in road dusts for children were carried out by using US EPA Health Risk Assessment Model. 48 road dust samples were collected in cultural and educational area, residential area, and city squares in Shanghai. Concentrations of Zn, Pb, Cu and Cd were more than 6-8 times, Cr and Ni more than 2-3 times higher than the soil background values. Average daily doses of ingestion of dust particles for all the metals were much higher than those of inhalation of re-suspended dust particles and dermal contact with dust particles. The highest levels of risks seemed to be associated with the route of ingestion of dust particles for all the metals. The order of non-cancer hazard indexes of metals was Pb Cr Ni Cu Zn Cd, and the order of carcinogen risks of metals was Cr Ni Cd. The non-cancer hazard indexes and carcinogen risks of metals were both lower than their threshold values, respectively, which indicated that the adverse health impact on children exposure to metals in road dusts were relatively light in Shanghai.