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).
王曼华,谢品华*,秦 敏,窦 科,王 界,李 昂,徐 晋,石 鹏,吴丰成 . 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[J]. 光谱学与光谱分析, 2011, 31(03): 789-792.
WANG Man-hua, XIE Pin-hua*, QIN Min, DOU Ke, WANG Jie, LI Ang, XU Jin, SHI Peng, WU Feng-cheng . Atmospheric HCHO Gradient Monitoring and Analysis in Beijing City with a Scanning DOAS System . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2011, 31(03): 789-792.
[1] Hellen H, Hakola H, Reissell A. Atmos. Chem. Phys., 2004, 4: 1771. [2] Molina L T, Molina M J. Air Quality in the Mexico Megacity: An Integrated Assessment. Kluwer Academy Publishers, Netherlands, 2002. 119. [3] DAI You-tian, LIU De-quan, ZENG Yan-jun(戴有天, 刘德全, 曾燕君). Research of Environmental Sciences(环境科学研究), 2002, 15(4): 27. [4] LU Yuan-wei, SHENG Jian-ping, Lü Shi-zhan(鹿院卫, 盛建平, 吕施展). Journal of Beijing University of Technology(北京工业大学学报), 2008, 2(34): 184. [5] Platt U, Stutz J. Differential Optical Absorption Spectroscopy: Principles and Application. Physics of Earth and Space Environments, 2008. 138. [6] ZHU Yan-wu, XIE Pin-hua, DOU Ke(朱燕舞,谢品华,窦 科). Acta Optica Sinica(光学学报), 2009, 29(2): 297. [7] Shirley T R, Brune W H, Ren X, et al. Atmos. Chem. Phys., 2006, 6: 2753.