土壤微孔对有机物吸附/解吸的影响及其表征  

Characterization of soil/sediment micropores and their impacts on the sorption-desorption behavior of organic pollutants

作　　者：王震宇[1] 于晓冬[1] 许颖[1] 高冬梅[1] 李锋民[1] Baoshan Xing 

机构地区：[1]中国海洋大学环境科学与工程学院海洋环境与生态教育部重点实验室,青岛266100 [2]Department of Plant, Soil and Insect Sciences, University of Massachusetts, Amherst, Massachusetts 01003, USA

出　　处：《生态学报》2009年第4期2087-2096,共10页Acta Ecologica Sinica

基　　金：国家自然科学基金资助项目(30570340);国家科技支撑计划资助项目(2006BAC01A13);国家教育部长江学者奖励计划资助项目

摘　　要：土壤吸附是影响环境中有机化合物迁移、降解及生物有效性的重要过程,而微孔的存在是影响有机化合物慢吸附过程的重要因素之一,土壤孔隙结构(pore structure)及土壤微孔的研究对于理解发生在土壤中的吸附/解吸过程十分必要。综述了近年来土壤微孔对有机化合物吸附解吸行为影响的研究态势,包括土壤的孔隙结构及微孔的存在形式、微孔吸附有机化合物的吸附动力学和可能机理、土壤中微孔表征的技术方法、孔隙大小分布的计算以及对未来的研究展望,以期对土壤有机污染生物修复的深入研究提供理论依据。Sorption to soils/sediments is an underlying process affecting the fate,transport,degradation and bioavailability of organic compounds in the environment.Soil/sediment micropores are an important factor influencing the slow sorption-desorption of these chemicals.As a result,it is essential to study and understand the soil pore structure and micropores.This article reviews recent research advances in the characterization of soil/sediment micropores and their impacts on the behavior of organic compounds,including the soil pore structure and existence forms of soil/sediment micropores,the characterization of soil/sediment micropores,the determination of pore size distribution,the dynamics and mechanisms of slow sorption-desorption,as well as the future research directions.This review will provide a valuable and fundamental basis for bioremediation of soils contaminated by organic compounds and for risk assessment.

关 键 词：土壤 微孔 慢吸附/解吸 有机化合物 

分 类 号：S152[农业科学—土壤学]