土壤胶体对重金属运移行为的影响

刘冠男; 刘新会

doi:10.7524/j.issn.0254-6108.2013.07.026

土壤胶体对重金属运移行为的影响

1.
北京师范大学环境学院,水环境模拟国家重点实验室, 北京, 100875
基金项目:
国家重点基础研究发展计划(2013CB430405)

国家自然科学基金创新研究群体科学基金(51121003)

中央高校基本科研业务费专项资金项目

环保公益性行业科研专项(2011467054)资助.

A review on the impact of soil colloids on heavy metal transport

1.
State Key Laboratory of Water Environment Simulation School of Environment, Beijing Normal University, Beijing, 100875, China
Fund Project:

摘要: 累积在表层土壤中的重金属,在一定条件下可以向地下迁移,进而影响地下水水质.由于现有污染物运移预测模型对重金属等污染物在土壤中运移的预测与实际监测结果偏差巨大,土壤胶体对土壤重金属运移的影响越来越受到人们的重视.土壤胶体组成丰富,在土壤环境中广泛存在.土壤胶体能够与重金属等污染物质相结合,对重金属等污染物质的运移产生重要影响.土壤胶体运移和土壤胶体与重金属的相互作用受到水动力、pH、离子强度、胶体粒径、土壤含水率等多种物理化学条件的影响.本文综述了土壤胶体对土壤重金属运移影响的诸多因素,介绍了胶体作用下重金属等污染物在多孔介质中的运移模型,提出了当前研究中存在的问题,并对今后需要展开的工作提出了建议.
- 土壤 /
- 胶体 /
- 重金属 /
- 运移
Abstract: Heavy metals accumulated in surface soil can transport into deep soil under some favorable conditions, and then impact the quality of groundwater. Great difference between the results obtained by the existing prediction models and the monitoring results was found.Therefore, more and more attention are paid to the impact of soil colloids on heavy metal transport in the soil. The soil colloids are various and ubiquitous in the soil. Enormous surface area of the soil colloid can adsorb heavy metals and other pollutants. It can lead to important impact on transport of heavy metals and other pollutants in the soil. The physi-chemical conditions of the soil water, such as hydrodynamic force, pH, ionic strength, colloid size, the water content of soil, etc., control the transport of soil colloid and the interactions between soil colloid and heavy metals. This paper reviewed the factors affecting colloid-heavy metal transport in the soil, presented the mathematical models of colloid-heavy metal transport in porous media, and proposed some challenges as well as suggestions for future research.
- soil /
- colloid /
- heavy metals /
- transport

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土壤胶体对重金属运移行为的影响

A review on the impact of soil colloids on heavy metal transport

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土壤胶体对重金属运移行为的影响

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A review on the impact of soil colloids on heavy metal transport

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土壤胶体对重金属运移行为的影响

A review on the impact of soil colloids on heavy metal transport

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土壤胶体对重金属运移行为的影响

English Abstract

A review on the impact of soil colloids on heavy metal transport

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