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.
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.
出处
《物理化学学报》
SCIE
CAS
CSCD
北大核心
2006年第5期596-601,共6页
Acta Physico-Chimica Sinica
基金
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
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
Ethylbenzene, Secondary organic aerosol, Smog chamber, Laser desorption/ionization Reaction mechanisms
