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| Evaluation of heavy metal pollution of soil in the Dabaoshan mining area based on the information diffusion theory |
| Received:March 20, 2018 |
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| KeyWord:information diffusion;heavy metals;pollution evaluation;soil;Dabaoshan mine |
| Author Name | Affiliation | E-mail | | ZHAO Hua-rong | School of Environmental Science and Engineering, Guilin University of Technology, Guilin 541004, China
Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin University of Technology, Guilin 541004, China | | | WANG Di | School of Environmental Science and Engineering, Guilin University of Technology, Guilin 541004, China | | | ZHU Bin-tong | School of Environmental Science and Engineering, Guilin University of Technology, Guilin 541004, China | | | JIN Xin | Collaborative Innovation Center for Water Pollution Control and Water Safety in Karst Area, Guilin University of Technology, Guilin 541004, China | jinxin1390@163.com |
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| Abstract: |
| To explore the feasibility of the information diffusion theory in heavy metal pollution evaluations of soil, 24 soil samples from the vicinity of the Dabaoshan mine were analyzed. Using a combination of the information diffusion theory and index of geo-accumulation, we evaluated the heavy metal pollution status and discussed probabilities of pollution risks at different levels. The results indicated that cadmium(Cd) was the most serious soil pollutant, followed by copper(Cu), and lead(Pb) and zinc(Zn) were the lowest in the study area. Cd pollution probabilities calculated using the information diffusion theory showed 71.65% of the soils had light-medium, 56.76% had medium, 39.76% had medium-serious, 25.38% had serious, 15.05% had serious-extremely serious, and 0.02% had extremely serious level pollution. Cu pollution probabilities showed 55.61% of soils had light-medium, 38.65% had medium, 25.09% had medium-serious, 15.88% had serious, and 9.27% had serious-extremely serious level pollution. The information diffusion theory could be used to evaluate soil heavy metal pollution. The results could be referenced by management and government of soil heavy metal pollution. |
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