| 上海城区多环芳烃的多介质归趋模拟研究 |
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| 引用本文： | 汪祖丞,刘敏,杨毅,谢雨杉.上海城区多环芳烃的多介质归趋模拟研究[J].中国环境科学,2011,31(6):984-990. |
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| 作者姓名： | 汪祖丞 刘敏 杨毅 谢雨杉 |
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| 作者单位： | 华东师范大学地理系,教育部地理信息科学重点实验室,上海,200062 |
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| 基金项目： | 国家自然科学基金资助项目，上海市教委"晨光计划"资助项目，博士点基金项目 |
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| 摘 要： | 利用城市多介质逸度模型模拟了稳态假设下上海城区16种PAHs在大气、水体、沉积物和植物等中的浓度分布,与实测值进行对比,并根据模拟结果计算了相间迁移通量.结果表明,大气直接排放输入是PAHs进入环境的主要途径,迁移过程包括扩散、沉降和侵蚀等,平流输出是其在系统中损失的主要途径;土壤和沉积物是PAHs主要的汇(占94.4%),其在不透水层上覆盖的膜中浓度达到最大(156g/m3),PAHs在沉积物和土壤中停留时间最长;随着环数的增加, PAHs在水体、植被和土壤中的降解损失所占比例从2.3%逐渐增加至48.9%,而在大气中的降解损失则从91.5%减少至4.0%.模型计算浓度与实测浓度吻合较好,验证了模型的可靠性,并通过灵敏度分析,确定了模型的关键参数.
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| 关 键 词： | 逸度模型 多环芳烃 多介质归趋 上海 |
| 收稿时间： | 2010-10-18; |
Simulation of multimedia fate of PAHs in Shanghai City |
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| WANG Zu-cheng,LIU Min,YANG Yi,XIE Yu-shan.Simulation of multimedia fate of PAHs in Shanghai City[J].China Environmental Science,2011,31(6):984-990. |
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| Authors: | WANG Zu-cheng LIU Min YANG Yi XIE Yu-shan |
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| Affiliation: | WANG Zu-cheng,LIU Min,YANG Yi,XIE Yu-shan(Key Laboratory of Geographic Information Science,Ministry of Education,Department of Geography,East China Normal University,Shanghai 200062,China) |
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| Abstract: | The MUM model was used to simulate the concentration distribution of PAHs in air,water,sediment,soil and plants in Shanghai city.Atmospheric emission was the dominant PAHs.The transport processes included diffusion,sedimentation,erosion ect.;while advective transport caused the main loss in the system.Sediment/soil was the main sink of PAHs(up to 94.4% of total mass),and the highest PAHs concentration was calculated in the film above aquifuge.The retention time of PAHs was highest in sediment/soil,and with ... |
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| Keywords: | fugacity model PAHs multimedia fate Shanghai |
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