| 三氯乙烯在天然土壤中的吸附行为及其影响因素 |
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| 引用本文： | 徐翯,冯流.三氯乙烯在天然土壤中的吸附行为及其影响因素[J].农业环境科学学报,2006,25(Z1):65-68. |
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| 作者姓名： | 徐翯 冯流 |
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| 作者单位： | 北京化工大学环境工程系,北京,100029 |
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| 摘 要： | 研究了三氯乙烯在天然土壤中的吸附行为,探讨了影响这一行为的环境因素。结果表明,三氯乙烯在天然土壤中的吸附过程可以划分为快速吸附、减速吸附、缓慢吸附和平衡吸附4个阶段。通过对三氯乙烯的土壤吸附等温线的研究,发现其吸附行为与线性模型相吻合,符合分配机理。从环境因素的影响而论,模拟结果显示,土壤pH值和含水量对吸附的影响不显著,当土壤有机质含量较低时,可以通过减少其吸附量达到降低三氯乙烯在土壤环境中的积累。
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| 关 键 词： | 土壤 有机污染物 三氯乙烯 吸附 影响因素 |
| 文章编号： | 1672-2043(2006)增刊-0065-04 |
| 修稿时间： | 2005年7月26日 |
Adsorption Behavior of Trichloroethylene on Natural Soils and Relevant Influencing Factors |
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| XU He,FENG Liu.Adsorption Behavior of Trichloroethylene on Natural Soils and Relevant Influencing Factors[J].Journal of Agro-Environment Science( J. Agro-Environ. Sci.),2006,25(Z1):65-68. |
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| Authors: | XU He FENG Liu |
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| Abstract: | This paper studied the sorption behaviors of trichloroethylene(TCE) on natural soils.The influencing factors were also discussed.The results showed that: the adsorption of TCE on natural soils could be divided into four stages: rapid-adsorption,slow-down adsorption,slow-speed adsorption and zero adsorption.The research on adsorptive isotherms of TCE pointed out that adsorptive behavior of the TCE tallied with the linear equation,according to partitioning mechanism.As for relevant environmental factors influencing this adsorption,contents of organic matter and water in soils,soils pH were involved.No evident influence was found of soil pH on the sorption of TCE.When soil organic matter is reduced a,the adsorption of the TCE on soils is decreased,thereby inhibiting the accumulation of the TCE in soil environment. |
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| Keywords: | soil persistent organic pollutants trichloroethylene sorption influencing factors |
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