School of Laboratory Medicine, Hubei University of Chinese Medicine, 1 Huangjia Lake West Road, Wuhan 430065, China.
School of Laboratory Medicine, Hubei University of Chinese Medicine, 1 Huangjia Lake West Road, Wuhan 430065, China.
Sci Total Environ. 2018 Jul 15;630:53-61. doi: 10.1016/j.scitotenv.2018.02.183. Epub 2018 Feb 20.
Heavy metal pollution has pervaded many parts of the world, especially in developing countries. The purpose of this study was to determine the concentrations and health risks of heavy metals in urban soils around an electronics manufacturing site in the Hubei Province of China. Soils samples were collected from commercial, roadside, farmland, and residential areas around the electronics manufacturing facility. A total of 136 topsoil samples were collected, and these samples were analyzed for Cr, Cu, Zn, As, Cd, Ni, and Pb. The geoaccumulation index (Igeo), pollution index (PI), and potential ecological risk index (PER) were calculated to assess the soil pollution levels. The hazard index (HI) was used to assess the human health risks posed by the presence of heavy metals. The total concentrations of the seven congeners (∑metals) ranged from 3738.86 to 5173.25mgkg, and the concentrations were highest in the commercial area followed (in decreasing order) by the roadside, farmland, and residential areas. The HI for children and adults descended in the order of Cr>As>Pb>Cd>Cu>Ni>Zn. The carcinogenic risks of two metals, namely, Cr and As, for children and adults were higher than 10, and children faced greater health risks.
重金属污染已经蔓延到世界许多地区，特别是在发展中国家。本研究的目的是测定中国湖北省一个电子制造工厂周边城市土壤中重金属的浓度和健康风险。从电子制造设施周围的商业区、路边、农田和居民区采集了 136 个表层土壤样本。对这些样本进行了 Cr、Cu、Zn、As、Cd、Ni 和 Pb 的分析。采用地积累指数（Igeo）、污染指数（PI）和潜在生态风险指数（PER）来评估土壤污染水平。采用危害指数（HI）来评估重金属存在对人体健康的风险。七种同系物（∑metals）的总浓度范围为 3738.86-5173.25mgkg，商业区的浓度最高，其次是路边、农田和居民区。儿童和成人的 HI 顺序为 Cr>As>Pb>Cd>Cu>Ni>Zn。两种金属 Cr 和 As 对儿童和成人的致癌风险均高于 10，儿童面临更大的健康风险。
