粤港澳地区多环芳烃的多介质归趋  

Multimedia fate modeling of PAHs in Guangdong,Hong Kong,and Macao

作　　者：唐明金[1] 徐志新[1] 左谦[1] 黄铭洪[2] 张干[3] 陶澍[1] 

机构地区：[1]北京大学环境学院//地表过程分析与模拟教育部重点实验室,北京100871 [2]香港浸会大学生物学 [3]中国科学院广州地球化学研究所,广东广州510640

出　　处：《生态环境》2006年第4期670-673,共4页Ecology and Environmnet

基　　金：国家重点基础研究计划项目(2003CB415004);国家自然科学基金项目(40332015;40021101);地表过程分析与模拟实验室开放合作项目

摘　　要：以广东省及港澳两地为研究区域,在完全混合和稳态假设下采用多介质逸度模型估算了目前状况下16种优控多环芳烃(PAH16)在环境各相中的质量浓度及跨界面迁移通量,并采用实测质量浓度数据进行模型验证。除个别数据外,预测质量浓度与验证质量浓度的差别在一个数量级以下,且多数在半个量级之内。模型计算结果表明:化石燃料燃烧是当地PAH16的主要来源,大气和土壤中的降解是其消失的主要途径,PAH16在该地区的最重要界面迁移过程是气地(水)交换。A level Ⅲ fugacity model was conducted to estimate the fate of PAHs in Guangdong, Hong Kong, and Macao under a steady-state assumption. Concentrations in various media and transfer fluxes between the media were predicted. The results were validated by comparison between the predicted and the measured concentrations of PAHs in the bulk media of the area. With exceptions of a few numbers, the differences between them were less than one order of magnitude with most of them below 0.5 log-units. It was demonstrated that the major source of PAHs in the area is combustion of fossil fuel and degradation in air and soil are the major route of disappearance. Air-surface transfer are the most important processes among many inter-media transfers.

关 键 词：多环芳烃 多介质模型 迁移通量 逸度 

分 类 号：X142[环境科学与工程—环境科学]