Assessment of heavy metal pollution and human health risk in urban soils of a coal mining city in East China

作者：Liu Ying; Lei Shaogang^*; Chen Xiaoyang

来源：Human and Ecological Risk Assessment, 2016, 22(6): 1359-1374.

DOI：10.1080/10807039.2016.1174924

• heavy metal
• mining city
• urban soil
• spatial distribution
• potential ecological risk
• human health risk

The aims of this study were to determine the concentrations, distribution, potential ecological risk ( PER), and human health risk ( Risk) of heavy metals in urban soils from a coal mining city in China. A total of 36 topsoil samples from Huainan city, Anhui, East China, were collected and analyzed for As, Hg, Pb, Cd, Cr, and Cu. The PER was calculated to assess the pollution level. The hazard index ( HI) and carcinogenic risk were used to assess the human health risk of heavy metals in the study area. The average concentration of As, Hg, Pb, Cd, Cr, and Cu were 12.54, 0.21, 24.21, 0.19, 49.39, and 21.74 mg kg(-1), respectively. The correlations between heavy metals indicated that Cu, Cr, Cd, and Pb mainly originated from automobile exhaust emissions, coal gangue, fly ash, and industrial wastewater, and that As and Hg mainly came from coal combustion exhaust. The PER index values of heavy metals decreased in the following order: Hg > Cd > As > Cu > Pb > Cr. The HI and Risk values indicated that the noncarcinogenic and carcinogenic risks of selected metals in the urban soil were both below the threshold values.

• 出版日期2016
• 单位安徽理工大学; 中国矿业大学（北京）