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Citation: HUANG Ming-Qiang, HAO Li-Qing, ZHOU Liu-Zhou, GU Xue-Jun, WANG Zhen-Ya, FANG Li, ZHANG Wei-Jun. Chemical Composition and Reaction Mechanisms for Secondary Organic Aerosol from Photooxidation of Ethylbenzene[J]. Acta Physico-Chimica Sinica, ;2006, 22(05): 596-601. doi: 10.3866/PKU.WHXB20060516 shu

Chemical Composition and Reaction Mechanisms for Secondary Organic Aerosol from Photooxidation of Ethylbenzene

1.
Laboratory of Environment Spectroscopy, Anhui Institute of Optics&Fine Mechanics,Chinese Academy of Sciences, Hefei 230031, P. R. China

Received Date: 24 November 2005
Available Online: 28 April 2006

A laboratory study was carried out to investigate the secondary organic aerosol (SOA) products from photooxidation of the aromatic hydrocarbon ethylbenzene. The experiments were conducted by irradiating ethylbenzene/CH3ONO/NOx mixtures in a home-made smog chamber. Size distribution of the secondary organic aerosol particles was detected with an aerodynamic particle sizer spectrometer. The aerosol time-of-flight mass spectrometer (ATOFMS) was used to measure the chemical composition of individual secondary organic aerosol particle in real time. According to a large number of single aerosol mass spectra, the chemical composition of SOA was obtained statistically. The possible reaction mechanisms leading to these products were also discussed.
- Ethylbenzene;Secondary organic aerosol;Smog chamber;Laser desorption/ ionization; Reaction mechanisms
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