| 乙苯光氧化产生二次有机气溶胶的化学成分及反应机理分析 |
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| 引用本文： | 黄明强,郝立庆,周留柱,顾学军,王振亚,方黎,张为俊.乙苯光氧化产生二次有机气溶胶的化学成分及反应机理分析[J].物理化学学报,2006,22(5):596-601. |
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| 作者姓名： | 黄明强 郝立庆 周留柱 顾学军 王振亚 方黎 张为俊 |
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| 作者单位： | Laboratory of Environment Spectroscopy, Anhui Institute of Optics&Fine Mechanics,Chinese Academy of Sciences, Hefei 230031, P. R. China |
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| 基金项目： | 国家自然科学基金(20477043)，中国科学院创新基金项目(KJCX2-SW-H08)资助项目 |
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| 摘 要： | 在自制的烟雾腔内,研究羟基自由基(OH·)启动的乙苯的光氧化反应和一系列后续反应,产生了二次有机气溶胶. 采用空气动力学直径粒谱分析仪分析了气溶胶粒子的尺寸分布;并用自制的气溶胶飞行时间质谱仪快速、实时地测量了单个二次有机气溶胶粒子的分子组分. 初步探讨了这些组分的可能反应机理.
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| 关 键 词： | 乙苯 二次有机气溶胶 烟雾腔 激光解吸附电离 反应机理 |
| 收稿时间： | 2005-11-24 |
| 修稿时间： | 2006-01-17 |
Chemical Composition and Reaction Mechanisms for Secondary Organic Aerosol from Photooxidation of Ethylbenzene |
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| HUANG Ming-Qiang,HAO Li-Qing,ZHOU Liu-Zhu,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(5):596-601. |
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| Authors: | HUANG Ming-Qiang HAO Li-Qing ZHOU Liu-Zhu GU Xue-Jun WANG Zhen-Ya FANG Li ZHANG Wei-Jun |
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| Institution: | Laboratory of Environment Spectroscopy, Anhui Institute of Optics&Fine Mechanics,Chinese Academy of Sciences, Hefei 230031, P. R. China |
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| Abstract: | 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. |
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| Keywords: | Ethylbenzene Secondary organic aerosol Smog chamber Laser desorption/ ionization Reaction mechanisms |
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