| 基于扫描DOAS系统对北京城市大气中甲醛的梯度测量与分析 |
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| 作者姓名： | Wang MH Xie PH Qin M Dou K Wang J Li A Xu J Shi P Wu FC |
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| 作者单位： | 中国科学院安徽光学精密机械研究所,环境光学与技术重点实验室,安徽,合肥,230031 |
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| 基金项目： | 国家自然科学基金项目,国家高技术研究发展计划(863计划)项目 |
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| 摘 要： | 利用扫描长程DOAS(差分吸收光谱技术)系统结合气象高塔于2009年7月28日至8月13日开展了测量大气污染物廓线的外场,实验,对北京市大气中的SO2,NO2,O3,HCHO,HONO五种痕量气体进行实时监测,获得了 HCHO等污染物的浓度时间序列及垂直梯度时间序列.通过分析HCHO气体的垂直分布频率特征,并结合其他气...
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| 关 键 词： | 扫描差分吸收光谱技术(DOAS) HCHO 垂直廓线 梯度 来源 |
Atmospheric HCHO gradient monitoring and analysis in Beijing City with a scanning DOAS system |
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| Wang MH,Xie PH,Qin M,Dou K,Wang J,Li A,Xu J,Shi P,Wu FC.Atmospheric HCHO gradient monitoring and analysis in Beijing City with a scanning DOAS system[J].Spectroscopy and Spectral Analysis,2011,31(3):789-792. |
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| Authors: | Wang Man-hua Xie Pin-hua Qin Min Dou Ke Wang Jie Li Ang Xu Jin Shi Peng Wu Feng-cheng |
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| Institution: | Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China. wmh@aiofm.ac.cn |
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| Abstract: | Scanning differential optical absorption spectroscopy (DOAS) technique combined with meteorological tower was used for monitoring vertical profiles of SO2, NO2, O3, HCHO and HONO along three light paths in Beijing City during July 28, 2009 to August 13, 2009. As a result, the time series of concentrations and vertical gradient of HCHO as well as other gases were acquired. By analyzing the vertical distribution frequency characteristics of HCHO, data of other gases and meteorological data, it was concluded that the main source of HCHO is vehicles emissions around the measurement site. The photochemical reaction as the secondary source accounts for a significant proportion of the source of HCHO at certain times of day (around noon, for a few hours). |
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| Keywords: | HCHO |
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