Characterization of products from photooxidation of toluene

作     者：HAO Li-qing WANG Zhen-ya FANG Li ZHANG Wei-jun WANG Wei LI Cheng-xiang SHENG Liu-si 

作者机构：Laboratory of Environmental Spectroscopy Anhui Institute of Optics and Fine Mechanics Chinese Academy of Sciences Hefei 230031 China National Synchrotron Radiation Laboratory University of Science and Technology of China Hefei 230026 China 

出 版 物：《Journal of Environmental Sciences》 (环境科学学报（英文版）)

年 卷 期：2006年第18卷第5期

页      面：903-909页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070602[理学-大气物理学与大气环境] 070302[理学-分析化学] 0706[理学-大气科学] 0703[理学-化学] 

基　　金：The National Natural Science Foundation of China (No. 20477043)  the Knowledge Innovation Foundation of Chinese Academy ofSciences (No. KJCX2-SW-H08) and the National Synchrotron Graduation Innovation Foundation of Ministry of Education of China (Hefei) 

主　　题：toluene photooxidation secondary organic aerosol Fourier transform infrared spectrometer smog chamber 

摘      要：Photooxidation reaction of toluene in smog chamber systems was initiated by the UV radiation of tolucne/CH5ONO/NOx mixtures. The products of the photooxidation reaction of toluene and its subsequent reactions were analyzed directly utilizing Fourier transform infrared spectrometer （FTIR）. Detailed assignments to FTIR spectrum of gas-phase products were given. The information of some important functional groups in the products, such as, carbonyl groups （C-O）, hydroxyl groups （-OH）, carboxylic acid （- COOH）, C-C bonding, N O bonding and C-H bonding （C H）, was got from this analysis. These results were compared to those analyzed by aerosol time of flight mass spectrometer （ATOFMS）. It was found that there are some differcnccs between FTIR analysis of gas-phase products and that of particle-phase, for example, the products with carbonyl groups, which were connected to unsaturated chemical bonds, was relatively higher in the gas phase, while kctoncs, aldehydes, carboxylic acid and organonitrates were the dominant functional groups in the aerosol-phase reaction products. The possible reaction pathways of some important products in the gas phase were also discussed.