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首页> 外文期刊>Environmental Monitoring and Assessment >Human health risk assessment of heavy metals in a replaced urban industrial area of Qingdao, China
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Human health risk assessment of heavy metals in a replaced urban industrial area of Qingdao, China

机译：青岛市区工业区重金属的人类健康风险评估

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摘要

The aim of this study was risk characterization of a replaced urban industrial land located north of Qingdao, in relation to heavy metals values. Soil concentrations of Cd, Pb, Cu, Ni, Cr, and Zn were analyzed. It was observed that the components of Cd, Ph, Cu, Ni, Cr, and. Zn are about 2.22, 8.07, 4.70, 6.81, 2.65, and 3.0-folds, respectively, when compared with the local natural background values in Qingdao. The spatial distribution of heavy metals indicated that these hotspots for Cr and Zn located in the southwestern part, Ni and Cd in the middle of the south area, Ph in the northwest, and Cu in the middle of the east area, The values of pollution index and Nemerow integrated pollution index revealed that 100 % of soil samples were moderately or heavily contaminated by six heavy metals. From these results, human health risk assessment for sensitive population was performed according to two different land uses. For non-carcinogenic risk, the direct oral ingestion appeared to be the main exposure pathway followed by dermal and inhalation absorption. The HI values of Pb and Cr characterized for children were larger than 1, while HI values of each metal for adults in two scenarios were lower than 1. Besides, carcinogenic risk from inhalation exposure to Cr for children and adults in two scenarios all exceeded the safety limit.
机译：这项研究的目的是根据重金属的价值，对位于青岛以北的城市工业用地进行风险描述。分析了土壤中Cd，Pb，Cu，Ni，Cr和Zn的浓度。观察到Cd，Ph，Cu，Ni，Cr和Cd的成分。与青岛当地自然背景值相比，锌分别约为2.22、8.07、4.70、6.81、2.65和3.0倍。重金属的空间分布表明，这些铬和锌的热点位于西南部，南部的中部为镍和镉，西北部的为Ph，东部的中部为铜，污染价值指数和Nemerow综合污染指数表明，100％的土壤样品被六种重金属中度或重度污染。根据这些结果，根据两种不同的土地用途对敏感人群进行了人类健康风险评估。对于非致癌风险，直接口服摄入似乎是主要的接触途径，其次是皮肤吸收和吸入吸收。在两种情况下，儿童表征的Pb和Cr HI值均大于1，而成年人中每种金属的HI值均低于1。此外，在两种情况下，儿童和成年人吸入Cr所致的致癌风险均超过了。安全极限。

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