| Study on the mechanism of transport of heavy metals in soil in western suburb of Beijing |
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| 作者姓名： | 李宏艳 王金生 滕彦国 王震宇 |
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| 作者单位： | College ofWater Sciences Beijing Normal University，College ofWater Sciences Beijing Normal University，College ofWater Sciences Beijing Normal University，College ofWater Sciences Beijing Normal University，Beijing100875 China Beijing100875 China Beijing100875 China Beijing100875 China |
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| 基金项目： | the Foundation for the Social Service of Ministry of Science and Technology，China Ministry of Science and Technology under the program，Development and Experiment of Ecological and Environmental Monitoring and Forcasting Technology for Mining Area |
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| 摘 要： | 1 IntroductionIncorporation of potentially toxic metals ( e.g.Cd, Cu, Cr, Pb, Hg, As, Se, Zn, Ni) into soils ei-ther through sewage-sludge irrigation or some othersources of pollution (e.g. atmospheric deposition, ap-plication of agri-chemicals) has posed…
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| 关 键 词： | 重金属 北京 吸附作用 环境污染 土壤污染 |
| 收稿时间： | 14 May 2007 |
Study on the mechanism of transport of heavy metals in soil in western suburb of Beijing |
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| Hongyan Li,Jinsheng Wang,Yanguo Teng,Zhenyu Wang.Study on the mechanism of transport of heavy metals in soil in western suburb of Beijing[J].Chinese Journal of Geochemistry,2006,25(2):173-177. |
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| Authors: | Hongyan Li Jinsheng Wang Yanguo Teng Zhenyu Wang |
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| Affiliation: | (1) College of Water Sciences, Beijing Normal University, 100875 Beijing, China |
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| Abstract: | Researchers are paying more and more attention to the adsorption and transport of heavy metals in soil. In this study, laboratory experiments were performed to investigate the characteristics of adsorption and transport of mercury in soils of different locations in the western suburb of Beijing. To characterize the adsorption mechanism of mercury in soil, adsorption isotherms were determined through a batch experiment. Soil column experiments were performed in saturated soil under steady-state flow at a specific water head. The breakthrough curves (BTC) for the tracer (bromine) and mercury were obtained after continuous input. Moreover, two solute transport models convection-dispersion equation model (CDE) and two-site non-equilibrium model (TSN)] were used to simulate heavy metal movement in soil on a laboratory column scale. According to the simulating results, we explored which model is more adapted to simulate the movement of heavy metals in saturated soil in the western suburb of Beijing. |
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| Keywords: | heavy metal pore-water velocity retardation factor two-site non-equilibrium model |
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