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Eperimental study of photooxidation products of ethylbenzene |
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| Authors: | Mingqiang Huang Weijun Zhang Liqing Hao Zhenya Wang Li Fang Ruihong Kong Xiaobin Shan Fuyi Liu Liusi Sheng |
| Institution: | 1. Key Laboratory of Atmospheric Composition and Optical Radiation,Anhui Institute of Optics & Fine Mechanics,Chinese Academy of Sciences,Hefei 230031,China;Laboratory of Environment Spectroscopy,Anhui Institute of Optics & Fine Mechanics,Chinese Academy of Sciences,Hefei 230031,China;Department of Environmental Science and Engineering,Xiamen University,Tan Kah Kee College,Zhangzhou 363105,China 2. Key Laboratory of Atmospheric Composition and Optical Radiation,Anhui Institute of Optics & Fine Mechanics,Chinese Academy of Sciences,Hefei 230031,China;Laboratory of Environment Spectroscopy,Anhui Institute of Optics & Fine Mechanics,Chinese Academy of Sciences,Hefei 230031,China 3. National Synchrotron Radiation Laboratory,University of Science and Technology of China,Hefei 230029,China |
| Abstract: | Smog chamber experiments were performed to investigate the composition of products formed from photooxidation of aromatic hydrocarbon ethylbenzene.Vacuum ultraviolet photoionization mass spectrometer and aerosol time-of-flight mass spectrometer were used to measure the products in the gas and particle phases in real-time.Experimental results demonstrated that ethylphenol,methylglyoxal,phenol,benzaldehyde,and 2-ethylfurane were the predominant photooxidation products in both the gas and particle phases.However,there were some differences between detected gas phase products and those of particle phase,for example,2-ethylfurane,ethylglyoxylie acid,nitroethylbenzene,3,4-dioxopentanal and ethyl-nitrophenol were only existing in the particle-phase.The possible reaction mechanisms leading to these products were also discussed and proposed. |
| Keywords: | ethylbenzne secondary organic aerosol smog chamber desorption/ionization reaction mechanism |
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