沉积物中持久性有机物吸附解吸过程研究  

Study on the adsorption-desorption behavior of persistent organic compounds in sediments

作　　者：赵益栋[1] 蒋文新[1] 

机构地区：[1]交通运输部天津水运工程科学研究院水路交通环境保护技术实验室,天津300456

出　　处：《科技资讯》2013年第15期139-140,共2页Science & Technology Information

基　　金：中央级公益性科研院所基本科研业务费专项资金项目(项目编号:TKS110102)

摘　　要：持久性有机污染物因其高毒性、难降解性、生物累积性和长距离迁移等特性已成为沉积物中一类重要污染物,沉积物对它们的吸附-解吸行为是控制和调节水体和沉积物之间物质输送和交换的重要途径,决定了其对环境和人类的潜在威胁。本文综述了沉积物对持久性有机物的吸附解吸理论以及影响吸附-解吸行为的主要因素,包括天然有机物、有机物分子结构、pH和离子强度以及沉积物粒径等,并对当前研究中存在的问题及未来研究趋势提出建议。Persistent organic pollutants（POPs）has become an kind of important pollutants in sediments with its high toxicity, recalcitrance,bioaccumulation features and long distance migration.The adsorption-desorption behavior is one of important unit during the process of sediment.water transport and material exchanges,and determine its potential environmental and human threats.In this paper,the theory of adsorption--desorption was reviewed with the major factors including natural organic matter,organic molocular structure,pH and ionic strength and sediment particle size.Some problems in the field as well as suggestions for future research were finally provided in this paper.

关 键 词：持久性有机物 沉积物 吸附-解吸 有机质 滞后现象 

分 类 号：X50[环境科学与工程—环境工程]