典型重金属和有机氯农药在水环境多相体系中的共吸附过程中的交互作用机理

项目名称： 典型重金属和有机氯农药在水环境多相体系中的共吸附过程中的交互作用机理

项目编号： No.21277056

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 环境科学、安全科学

项目作者： 董德明

作者单位： 吉林大学

项目金额： 85万元

中文摘要： 本研究以铅、镉、铜、铬和砷等重金属和以五氯酚钠、林丹和滴滴涕为代表的有机氯农药在水环境多相体系（水相；生物膜、悬浮颗粒物和表层沉积物等固相及各固相主要化学组分）中发生的吸附作用过程中的交互作用及相关机理为研究对象，具体研究内容包括：研究共存重金属-有机氯农药在被水环境多种固相物质及其主要化学组分吸附过程中所发生的交互作用；考查共存污染物在各固相物质主要化学组分上的分布规律；研究共存污染物与单一污染物在水环境多相共存体系中随外界条件改变时在各相间及各相内的动态迁移变化规律，分析两者的差异；辅以同步辐射等多种仪器分析手段获取共存污染物与单一污染物在吸附作用前后污染物与水环境多相体系在空间分布特征等方面的微观信息，对相关差异进行分析。通过上述研究探讨重金属和有机氯农药在水环境多相体系中的共吸附过程中的交互作用机理。本研究结果将对深入了解重金属和有机氯农药在水环境中的迁移转化行为具有重要意义。

中文关键词： 重金属；有机氯农药；生物膜；吸附；交互作用

英文摘要： This project will mainly study the mechanisms of interactions between heavy metals (lead, cadmium, copper, chromium and arsenic) and organochlorine pesticides (sodium pentachlorophenol, lindane and DDT) when they are adsorbed by three different solid substances and their dominant chemical components in aquatic heterogeneous systems (aqueous phase; solid phases： biofilms, suspended particles and surface sediments). Firstly, interactions between coexisting heavy metals and organochlorine pesticides on the sorption by three different solid materials and their dominant chemical components in natural aquatic environment will be investigated. The distribution of heavy metals and organochlorine pesticides in these chemical components will be analyzed. Secondly, the difference of dynamic transport between coexisting pollutants and single pollutant among different phases or different components in aquatic multi-phase systems with the change of external factors will be observed. Finally, microscopic information associated with spatial distribution features of pollutants and aquatic heterogeneous systems before and after the adsorption process of coexisting pollutants and single pollutant will be gained using some microscopic experimental techniques, such as synchrotron radiation. The relative difference will be analyzed.

英文关键词： heavy metal；organochlorine pesticide；biofilm；sorption；interaction