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A Smog Chamber Facility for Qualitative and Quantitative Study on Atmospheric Chemistry and Secondary Organic Aerosol
Chang-jin Hu1,2, Yue Cheng2,3, Gang Pan2, Yan-bo Gai1,2, Xue-jun Gu1,2, Wei-xiong Zhao1,2, Zhen-ya Wang2, Wei-jun Zhang*1,2,4, Jun Chen5, Fu-yi Liu5, Xiao-bin Shan5, Liu-si Sheng5
1.Key Laboratory of Atmospheric Composition and Optical Radiation, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China;2.Laboratory of Atmospheric Physico-Chemistry, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China;3.No.8 Research Institute, China Electronics Technology Group Corporation, Hefei 230000, China;4.School of Environmental Science & Optoelectronic Technology, University of Science and Technology of China, Hefei 230026, China;5.National Synchrotron Radiation Laboratory, School of Nuclear Science and Technology, University of Science and Technology of China, Hefei 230029, China
Abstract:
In order to investigate the atmospheric oxidation processes and the formation of secondary organic aerosol (SOA), an indoor environmental reaction smog chamber are constructed and characterized. The system consists of the collapsible ~830 L FEP Teflon film main reactor, in which the atmospheric chemical reactions take place and the formation of SOA occurs under the simulated atmospheric conditions, and the diverse on-line gas- and particle-phase instrumentation, such as the proton transfer reaction mass spectrometer, the synchrotron radiation photoionization mass spectrometer, the aerosol laser time-of-flight mass spectrometer, and other traditional commercial instruments. The initial characterization experiments are described, concerning the temperature and ultraviolet light intensity, the reactivity of the pure air, the wall loss rates of gaseous compounds and particulate matter. And the initial evaluation experiments for SOA yields from the ozonolysis of α-pinene and for mass spectra of the products resulting from the photooxidation of OH initiated isoprene are also presented, which indicate the applicability of this facility on the studies of gas-phase chemical mechanisms as well as the formation of SOA expected in the atmosphere.
Key words:  Smog chamber, Atmospheric chemical reactions, Secondary organic aerosol, Mass spectrum
FundProject:
用于大气化学反应和二次有机气溶胶研究的实验室烟雾箱系统的搭建、测试与初步实验
胡长进1,2, 程跃2,3, 潘刚2, 盖艳波1,2, 顾学军1,2, 赵卫雄1,2, 王振亚2, 张为俊*1,2,4, 陈军5, 刘付轶5, 单晓斌5, 盛六四5
1.中国科学院安徽光学精密机械研究所中国科学院大气成分与光学重点实验室,合肥 230031;2.中国科学院安徽光学精密机械研究所大气物理化学研究室,合肥 230031;3.中国电子科技集团公司第八研究所,合肥 230000;4.中国科学技术大学环境科学与光电技术学院,合肥 230026;5.中国科学技术大学核科学技术学院国家同步辐射实验室,合肥 230029
摘要:
为了从本质上认识和了解大气氧化反应进程以及二次有机气溶胶的形成机制,设计并搭建了一套实验室模拟烟雾箱系统.将质子转移反应质谱、同步辐射光电离质谱及气溶胶激光飞行时间质谱等特色质谱检测系统与烟雾箱结合,用于大气氧化反应气相和粒子相产物的定量与定性分析.通过一系列表征实验获得了该系统的基本参数,如烟雾箱内温度和光强特征,气体化合物和颗粒物的壁损耗速率,零空气的背景反应性及实验结果的可重复性.臭氧氧化α-蒎烯定量化实验和OH启动异戊二烯光氧化反应的定性检测结果进一步表明了该系统能够满足大气化学反应过程中气相和粒子相化学成分的定性分析及二次有机气溶胶的定量化研究的需要.
关键词:  实验室模拟烟雾箱系统,大气氧化反应,二次有机气溶胶,质谱
DOI:10.1063/1674-0068/27/06/631-639
分类号: