Size distribution and chemical composition of secondary organic aerosol formed from Cl-initiated oxidation of toluene

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作者：
Mingqiang HuangWeijun ZhangXuejun GuChangjin HuWeixiong ZhaoZhenya WangLi Fang Key Laboratory of Atmospheric Composition and Optical RadiationAnhui Institute of Optics Fine MechanicsChinese Academy of SciencesHefei ChinaLaboratory of Environment SpectroscopyAnhui Institute of Optics Fine MechanicsChinese Academy of SciencesHefei ChinaDepartment of Environmental Science and EngineeringXiamen UniversityTan Kah Kee CollegeZhangzhou China [1 ,2 ,3 ,1 ,2 ,1 ,2 ,1 ,2 ,1 ,2 ,1 ,2 ,1 ,2 ,1 ,230031 ,2 ,230031 ,3 ,363105 ]
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Journal of Environmental Sciences | 2012年 / 24卷 / 05期
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摘要：
Secondary organic aerosol (SOA) formed from Cl-initiated oxidation of toluene was investigated in a home-made smog chamber. The size distribution and chemical composition of SOA particles were measured using aerodynamic particle sizer spectrometer and the aerosol laser time-of-flight mass spectrometer (ALTOFMS), respectively. According to a large number of single aerosol diameter and mass spectra, the size distribution and chemical composition of SOA were obtained statistically. Experimental results showed that SOA particles created by Cl-initiated oxidation of toluene is predominantly in the form of fine particles, which have diameters less than 2.5 μm (i.e., PM2.5), and glyoxal, benzaldehyde, benzyl alcohol, benzoquinone, benzoic acid, benzyl hydroperoxide and benzyl methyl nitrate are the major products components in the SOA. The possible reaction mechanisms leading to these products are also proposed.
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页码：860 / 864
页数：5
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