摘要
在烟雾腔内,用紫外光照射甲苯、氯气、一氧化氮和空气的混合物,启动甲苯和氯原子的光氧化反应和一系列的后续反应,产生非挥发性和半挥发性有机化合物.半挥发性有机化合物可以在气态和粒子态之间进行分配,产生二次有机气溶胶粒子.用实验室自制的气溶胶飞行时间质谱仪实时测量这些粒子产物的分子成分和粒径分布,并初步探讨了这些组分的可能反应机理.
Photooxidation of Cl atoms and toluene and their subsequent reactions are carried out using UV-irradiation of toluene/Cl/NO/air mixtures in a smog chamber.The secondary organic aerosols can form after those oxidation products of semi-volatile organic compounds are partitioned between gas phase and particle phase.The aerosol time-of-flight mass spectrometer(ATOFMS) is used to measure size and molecular composition of individual secondary organic aerosol particles.Size distribution and chemical composition of secondary organic aerosol are obtained in real time.The possible reaction mechanism leading to these products is also discussed.
出处
《过程工程学报》
CAS
CSCD
北大核心
2006年第z2期123-126,共4页
The Chinese Journal of Process Engineering
关键词
甲苯
光氧化
二次有机气溶胶
气溶胶飞行时间质谱仪
toluene
photooxidation
secondary organic aerosol
aerosol time-of-flight mass spectrometer
