Mass Spectrometry Study of OH-initiated Photooxidation of Toluene  

OH自由基启动甲苯光氧化产物的质谱

作　　者：黄明强[1,2,3] 张为俊[1,2] 王振亚[1,2] 方黎[1,2] 孔蕊弘[4] 单晓斌[4] 刘付轶[4] 盛六四[4] 

机构地区：[1]中国科学院安徽光学精密机械研究所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环境光谱学实验室,合肥230031 [3]厦门大学嘉庚学院环境科学与工程系,漳州363105 [4]中国科学技术大学国家同步辐射实验室,合肥230026

出　　处：《Chinese Journal of Chemical Physics》2011年第6期672-678,I0003,共8页化学物理学报（英文）

基　　金：This work was supported by the Open Research Fund of Key Laboratory of Atmospheric Composition and Optical Radiation, Chinese Academy of Sciences （No.J J-10-04）, Knowledge Innovation Foundation of Chinese Academy of Sciences （KJCX2-YW-N24）, and the National Natural Science Foundation of China （No.40975080 and No.10979061）.

摘　　要：The composition of products formed from photooxidation of the aromatic hydrocarbon toluene was investigated. The OH-initiated photooxidation experiments were conducted by irradiating toluene/CH3ONO/NO/air mixtures in a smog chamber, the gaseous products were detected under the supersonic beam conditions by utilizing vacuum ultraviolet photoionization mass spectrometer using synchrotron radiation in real-time. And an aerosol time-of-flight mass spectrometer was used to provide on-line measurements of the individual secondary organic aerosol particle resulting from irradiating toluene. The experimental results demonstrated that there were some differences between the gaseous products and that of particle-phase, the products of glyoxal, 2-hydroxyl-3-oxo-butanal, nitrotoluene, and methyl-nitrophenol only existed in the particle-phase. However, furane, methylglyoxal, 2-methylfurane, benzaldehyde, cresol, and benzoic acid were the predominant photooxidation products in both the gas phase and particle phase.

关 键 词：TOLUENE Secondary organic aerosol Smog chamber Desorption/ionization Reaction mechanism 

分 类 号：O[理学]