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首页> 外文会议>International Symposium on Environmental Science and Technology >Health risk assessment of heavy metals in road dusts in urban parks of Beijing, China
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Health risk assessment of heavy metals in road dusts in urban parks of Beijing, China

机译：中国北京市城市公园重金属健康风险评估

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摘要

Due to the continuous urbanization and industrialization in many countries of the world, heavy metals are continuously emitted into the terrestrial environment and pose a great threat on human health. A detailed study was conducted to determine the concentrations of six heavy metals (Cr, Ni, Cu, Zn, Cd and Pb) in road dusts in urban parks of Beijing, and assessed the health risk of these metals for local people. The dust samples were collected from 13 different urban parks in Beijing, China. The health risk was assessed using Hazard Quotient (HQ) and Health Index (HI). The results show that the average concentrations of Cr, Ni, Cu, Zn, Cd, Pb in the dust samples are 69.33, 25.97, 72.13, 219.20 0.64 and 201.82 mg/kg, respectively. The concentrations of Cu, Zn, Cd and Pb were much higher than those in the background value of Chinese soil. The assessment of health risk indicated that there were mainly three exposure pathways for people: ingestion, dermal contact and inhalation. The main exposure pathway of heavy metals to both children and adults is ingestion. The values of HQ and HI are lower than the safe level (=1), indicating no health risk exists in present condition. Meanwhile, the HI value for children is higher than that for adults, indicating that children have higher potential health risk than adults in Beijing parks.
机译：由于世界上许多国家的持续城市化和工业化，重金属不断被融入陆地环境，对人类健康构成巨大威胁。进行了详细研究以确定北京市公园道路粉尘中六种重金属（Cr，Ni，Cu，Cu，Zn，Cd和Pb）的浓度，并评估了当地人民这些金属的健康风险。从中国北京的13个不同的城市公园收集了粉尘样品。使用危险商（HQ）和健康指数（HI）评估健康风险。结果表明，粉尘样品中Cr，Ni，Cu，Zn，Cd，Pb的平均浓度分别为69.33,25.97,72.13,219.20 0.64和201.82mg / kg。 Cu，Zn，Cd和Pb的浓度远高于中国土壤背景值的浓度。健康风险的评估表明，人们主要有三种曝光途径：摄取，皮肤接触和吸入。对儿童和成年人的重金属的主要曝光途径是摄入的。 HQ和HI的值低于安全水平（= 1），表明现状中不存在健康风险。与此同时，儿童的高价值高于成年人的价值，表明孩子们比北京公园的成年人更高的潜在健康风险。

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