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| Distribution characteristics and source analysis of heavy metals in soil around a copper plant in Baotou, China |
| Received:December 17, 2015 |
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| KeyWord:copper plant;soil;heavy metal pollution;spatial distribution;source analysis |
| Author Name | Affiliation | E-mail | | LI Yu-mei | School of Energy and Environment, Inner Mongolia University of Science and Technology, Baotou 014010, China
College of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China | | | LI Hai-peng | School of Energy and Environment, Inner Mongolia University of Science and Technology, Baotou 014010, China | | | ZHANG Lian-ke | School of Energy and Environment, Inner Mongolia University of Science and Technology, Baotou 014010, China | lkzhang@imust.cn | | FAN Jian | School of Energy and Environment, Inner Mongolia University of Science and Technology, Baotou 014010, China | | | JIAO Kun-ling | School of Energy and Environment, Inner Mongolia University of Science and Technology, Baotou 014010, China | | | SUN Peng | School of Energy and Environment, Inner Mongolia University of Science and Technology, Baotou 014010, China
College of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China | |
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| Abstract: |
| Understanding spatial distribution and sources of soil heavy metals is critical to the control and remediation of soil heavy metal pollution. In this investigation, we collected 64 soil samples from 4 directions with different horizontal distances from a copper plant in Baotou, to analyze the spatial distribution characteristics and possible pollution sources of soil heavy metals. Six heavy metals (Cu, Cd, Pb, Zn, Mn, and Cr) were measured. Results showed that these heavy metals had different extents of accumulation in this area. Cu, Pb, and Cd pollution was common and serious due to human activities, with Cu being affected most by human activities. In addition, the distribution of six heavy metals was dependent on horizontal distance away from the copper plant and soil depth. Heavy metal content in surface soil (0 to 20 cm) first increased and then decreased as the horizontal distance increased. The content of Pb, Cr and Cu, Zn, Mn was the highest at 100 m and 300 m from the copper plant, respectively. All six heavy metals decreased with increasing soil depths. However, the rates of such de creases were low at the distance of 50 m, but high at 100 m and 300 m. Source analysis indicated that soil Cr, Cd, and Cu were resulted from compound pollution sources, while Pb and Zn from traffic sources, and Mn from natural sources. |
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