Heavy metals in peri-urban soil of Huangshi: Their distribution, risk assessment and source identification
YANG Yu-Zhen1,2(), LIU Sen-Rong1,2, YANG Yong3, LI Li-Fen1,2, LIU Sheng-Hua4,5, KANG Yi-Hua5, FEI Xin-Qiang1,2, GAO Yun-Liang1,2, GAO Bao-Long1,2()
1. Central South Geological Survey Institute, China Metallurgical Geology Bureau, Wuhan 430074,China 2. Institute of Mineral Resources Research, China Metallurgical Geology Bureau, Beijing 101300,China 3. Hubei Geological Bureau, Wuhan 430022,China 4. Institute of Hydrology and Environmental Geology, CAGS, Shijiazhuang 050061,China 5. School of Earth Sciences and Resources, China University of Geosciences (Beijing), Beijing 100083,China
To study the quality of the arable soil in peri-urban area of Huangshi City, the present research focused on analyzing heavy metals distribution characteristics, assessed its risk to environment, and subsequently identified its sources by multivariate statistical analysis based on high-density topsoil and subsoil sampling. The results show that the content of heavy metals in the soil isas follows: As (5.2×10-6~155.9×10-6), Pb (19.2×10-6~426.1×10-6), Hg (0.012×10-6~1.823×10-6), Cd (0.03×10-6~4.59×10-6), Zn (34.8×10-6~529.6×10-6), Ni (8.5×10-6~86.2×10-6), Cu (16.52×10-6~104.39×10-6) and Cr (51.2×10-6~145.5×10-6). The average content of Cd exceeds the regional soil environmental background value, and Cd even exceeds the soil risk screening value of agricultural land. Heavy metal pollutants are mainly concentrated in the topsoil above 40 cm. Among the land use types, paddy lands and dry lands are heavily polluted, and Cd, As and Pb are the main pollutants. In paddy lands, As, Pb, Cu and Zn exhibit slight pollution, Cd and Hg exhibit moderate pollution, whereas Cr and Ni do not exhibit pollution. In dry lands and forest lands, As, Pb and Hg exhibit slight pollution, Cd exhibits moderate pollution and Cr, Cu, Ni and Zn do not exhibit pollution. The multivariate statistical analysis indicates that Cr and Ni in the soil of the study area are of natural origin and related to the parent material of the soil. Cd, Pb, As and Hg are mainly of anthropogenic pollutants, which is related to high-intensity industrial and mining production and sulfide mineral acidification release in Huangshi City.However Cu and Zn constitute mixed sources, partly from soil environmental background, and partly from human activities and industrial production emissions.
杨育振, 刘森荣, 杨勇, 李丽芬, 刘圣华, 亢益华, 费新强, 高云亮, 高宝龙. 黄石市城市边缘区土壤重金属分布特征、风险评价及溯源分析[J]. 物探与化探, 2021, 45(5): 1147-1156.
YANG Yu-Zhen, LIU Sen-Rong, YANG Yong, LI Li-Fen, LIU Sheng-Hua, KANG Yi-Hua, FEI Xin-Qiang, GAO Yun-Liang, GAO Bao-Long. Heavy metals in peri-urban soil of Huangshi: Their distribution, risk assessment and source identification. Geophysical and Geochemical Exploration, 2021, 45(5): 1147-1156.
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