溶解性有机质对土壤中TNT迁移行为的影响

Effect of Dissolved Organic Matter on the Migration Behavior of TNT in Soil

溶解性有机质是环境中广泛存在的有机混合物,对污染物的环境行为具有重要影响,能够通过离子交换、吸附、络合、氧化还原等作用影响各类物质在环境中的迁移转化。近年来,利用溶解性有机质处理环境中的污染物受到越来越多学者的关注。TNT在军事当中的大量使用,造成军事场地环境的污染,并且TNT能够通过皮肤接触、呼吸作用等途径对人体造成伤害。阐述了溶解性有机质的特性和理化性质以及TNT在土壤中的迁移过程。综述了国内外溶解性有机质影响土壤中TNT迁移转化的研究现状,对利用溶解性有机质促进TNT污染场地的修复提出了研究展望。

Dissolved organic matter is a kind of organic mixture that widely presents in the environment. It has significant impact on the environment behavior of contaminations. It can affect the migration and transformation of various substances in the environment by ion exchange, adsorption, complexation and oxidation. In recent years, more and more scholars paid attention to the use of dissolved organic matter to deal with the pollutants in the environment. TNT is widely used in military, which causes the environmental pollution in military sites. TNT can cause harm to the human body through skin contact, respiration and other ways. In this paper, physical and chemical properties of dissolved organic matter（DOM） were described as well as the migration process of TNT in soil. The research status of effect of DOM on the migration and transformation of TNT in soil was summarized. And how to use DOM to repair TNT contaminated sites was discussed.