| 北京大气颗粒物污染的区域性本质 |
| |
| 引用本文： | 贺克斌,贾英韬,马永亮,雷宇,赵晴,TANAKA Shigeru,OKUDA Tomoaki.北京大气颗粒物污染的区域性本质[J].环境科学学报,2009,29(3):482-487. |
| |
| 作者姓名： | 贺克斌 贾英韬 马永亮 雷宇 赵晴 TANAKA Shigeru OKUDA Tomoaki |
| |
| 作者单位： | 1. 清华大学环境科学与工程系,北京,100084
2. 庆应大学环境化学实验室,横滨223-8522,日本 |
| |
| 基金项目： | 国家杰出青年科学基金 |
| |
| 摘 要： | 颗粒物是北京的首要大气污染物,2006年PM10年均浓度超标60%以上.本研究基于颗粒物质量浓度在线监测和逐日TSP的采样分析,结合地面天气形势,论述了北京大气颗粒物污染的区域性特征.首先,北京大气颗粒物污染过程的形成由以冷锋过境为明显标志的周期性的天气系统决定,天气系统的活动尺度决定了颗粒物污染的区域性.其次,从PM2.5/PM10和Pb/Al比值的变化判别出颗粒物污染过程中随着颗粒物浓度的升高,细颗粒物呈现富集趋势;细颗粒物的富集由粗颗粒物的去除和超细颗粒物的生成(核化过程)、以及二次颗粒物的生成所致;污染过程中颗粒物的老化以及化学组成(Pb/Al)的大幅度变化共同表明了北京大气颗粒物来源的区域性本质.
|
| 关 键 词： | 北京 大气颗粒物 区域性 气象 |
| 收稿时间： | 4/26/2008 1:37:27 PM |
| 修稿时间： | 6/27/2008 3:55:02 PM |
Regionality of episodic aerosol pollution in Beijing |
| |
| HE Kebin,JIA Yingtao,MA Yongliang,LEI Yu,ZHAO Qing,TANAKA Shigeru and OKUDA Tomoaki.Regionality of episodic aerosol pollution in Beijing[J].Acta Scientiae Circumstantiae,2009,29(3):482-487. |
| |
| Authors: | HE Kebin JIA Yingtao MA Yongliang LEI Yu ZHAO Qing TANAKA Shigeru and OKUDA Tomoaki |
| |
| Institution: | HE Kebin1,JIA Yingtao1,MA Yongliang1,LEI Yu1,ZHAO Qing1,TANAKA Shigeru2,OKUDA Tomoaki21.Department of Environmental Science , Engineering,Tsinghua University,Beijing 1000842.Laboratory of Environmental Chemistry,Yokohama 223-8522,Japan |
| |
| Abstract: | Particulate matter is the primary pollutant of the urban atmosphere in Beijing.PM10 was 60% higher than the national second-class standard in 2006.Based on fast-response aerosol concentrations and elemental compositions in daily TSP,this study revealed the regionality of episodic aerosol pollution.First,surface weather patterns indicated that episodic aerosol pollution was affected by the passing of cold fronts caused by the synoptic cycles covering large areas,which naturally resulted in the regionality of... |
| |
| Keywords: | Beijing aerosol regionality meteorology |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《环境科学学报》浏览原始摘要信息 |
| 点击此处可从《环境科学学报》下载免费的PDF全文 |
|
