| 北京东南郊大气中多环芳烃的沉降 |
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| 引用本文： | 张树才,沈亚婷,王开颜,张 巍,胡连伍,岳大攀,王学军. 北京东南郊大气中多环芳烃的沉降[J]. 环境科学研究, 2007, 20(4): 28-33 |
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| 作者姓名： | 张树才 沈亚婷 王开颜 张 巍 胡连伍 岳大攀 王学军 |
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| 作者单位： | 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 |
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| 基金项目： | 国家自然科学基金 , 国家重点基础研究发展计划(973计划) , 教育部科学技术研究项目 |
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| 摘 要： | 对2005年3月─2006年1月北京市东南郊气相、总悬浮颗粒物(TSP)以及降尘样品中16种优控PAHs分析发现，降尘样品中2～3环PAHs组分占优势地位，其构成比例与TSP和气相样品差异较大；比较不同采样点、各季节的PAHs沉降速率，对样品中PAHs组分构成比例的特点给予解释，推断PAHs的沉降行为受气象条件、沉降点周围污染源强度以及下垫面性质等因素的影响；对PAHs月均沉降通量与ρ(PAHs)进行相关分析，建立PAHs月均沉降通量与TSP中PAHs总浓度之间的回归方程.
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| 关 键 词： | 总悬浮颗粒物 降尘 多环芳烃 沉降速率 通量 北京 |
| 文章编号： | 1001-6929（2007）04-0028-06 |
| 收稿时间： | 2006-12-04 |
| 修稿时间： | 2006-12-042007-01-04 |
Atmospheric Polycyclic Aromatic Hydrocarbons and Deposition in the Southeastern Suburb of Beijing |
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| ZHANG Shu-cai,SHEN Ya-ting,WANG Kai-yan,ZHANG Wei,HU Lian-wu,YUE Da-pan and WANG Xue-jun. Atmospheric Polycyclic Aromatic Hydrocarbons and Deposition in the Southeastern Suburb of Beijing[J]. Research of Environmental Sciences, 2007, 20(4): 28-33 |
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| Authors: | ZHANG Shu-cai SHEN Ya-ting WANG Kai-yan ZHANG Wei HU Lian-wu YUE Da-pan WANG Xue-jun |
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| Affiliation: | MOE Laboratory of Earth Surface Processes, College of Environmental Sciences, Peking University, Beijing 100871, China |
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| Abstract: | Gas phase, TSP and dustfall samples were collected in the southeastern suburb of Beijing from March, 2005 to January, 2006, and concentrations of 16 USEPA priority PAHs in all samples were analyzed. 2 - 3 ring compounds were dominating in dustfall samples, and significant differences existed between the composition patterns of PAHs in the dustfall samples and TSP and gas phase samples. Based on the comparison of the deposition velocities in different sites and seasons, the characteristics of the PAH composition patterns in different phases could be explained. Impact factors such as the conditions of weather, pollution level and sources, as well as the conditions of the sampling sites could influence the deposition level. A regressive equation between the mensal PAHs fluxes and mass concentrations of PAHs in TSP was put forward after correlation analysis. |
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| Keywords: | TSP dustfall PAHs deposition velocity flux Beijing |
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