典型地区包气带中多溴联苯醚的胶体运移研究

项目名称： 典型地区包气带中多溴联苯醚的胶体运移研究

项目编号： No.41203058

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 地球化学

项目作者： 吴启航

作者单位： 广州大学

项目金额： 25万元

中文摘要： 广东汕头贵屿和清远龙塘电子垃圾拆解地土壤中多溴联苯醚（PBDEs）污染严重，包气带是PBDEs向地下水迁移的过渡带，在大气降水补给地下水以及地下水通过包气带蒸发过程中扮演着重要的角色。胶体运移对土壤包气带中PBDEs的垂向运动和迁移值得关注。以上述两个污染点土壤中PBDEs为研究对象，采用野外观测试验和室内静态和动态模拟试验考察包气带土壤胶体对PBDEs运移过程和规律，主要研究胶体颗粒存在状态、PBDEs浓度和类型、土壤含水量、pH值和有机质以及土壤中Cu污染对PBDEs胶体运移过程的影响，识别主要影响因子，探索PBDEs在在典型污染区域土壤包气带中垂向时空迁移和环境归趋，地下水污染的风险评估提供基础数据，为防止污染的扩大和生态修复，保护地下水和人体健康提供参考。

中文关键词： 多溴联苯醚；电子垃圾；胶体运移；土壤；包气带

英文摘要： Polybrominated diphenyl ethers (PBDEs) pollution is serious in electronic waste dismantling soil of Guiyu, Shantou, Guangdong and Longtang, Qingyuan Guangdong. The vadose zone is the transition zone of PBDEs transportion to groundwater and plays important role in the evaporation process of meteoric recharge groundwater and groundwater through the vadose zone. Colloid transport of PBDEs in the vadose zone soil vertical movement and transportion cause for concern. Study of field observation and indoor static and dynamic simulations aim to examine the vadose zone soil colloids PBDEs transportion process and the rule of PBDEs in the two contaminated sites.To study impact of soil colloidal particles existence, PBDEs concentration and type, soil moisture, pH and organic matter and soil Cu pollution on PBDEs colloid transport processes, And identify the main impact factors, exploration of PBDEs in the vertical in the unsaturated zone of a typical polluted areas temporal and spatial transportion and environmental fate.It will provide basic data to assessment groundwater pollution risk and provide a reference in order to prevent the expansion of pollution and ecological restoration, protection of groundwater and human health.

英文关键词： PBDEs；E-waste；Colloid Transportion；Soil；Vadose zone