Study on influencing factors of SOA induced by photooxidation of vinyl acetate-NO2
YANG Zhi-bo, GUO Bin, REN Ai-ling, LIU Zi-nan
Hebei Provincial Research and Promotion Center for Air Pollution Control Technology, National Local Joint Engineering Research Center for Volatile Organic Compounds and Odorous Pollution Control Technology, School of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China
Abstract: At a temperature of 287(±1) K,the effects of initial concentration ratio of reactants,light intensity,relative humidity and some seed aerosols on the generation of SOA from C4H6O2-NO2 are investigated in a self-made indoor smog chamber.The results indicate that the increases of both the initial concentration ratio of reactants and the light intensity will increase the production concentration of SOA,and there is a significant linear relationship between the ratio and the maximum concentration of SOA.High humidity conditions inhibit the generation of more SOA.Light intensity has the largest impact on SOA generation,followed by reactant initial concentration ratio and relative humidity.The addition of seed aerosol,such as (NH4)2SO4,NH4NO3 and Na2SiO3·9H2O,will promote the generation of SOA at the initial stage,but will hinder the generation of SOA later,and will reduce the final production of SOA.(NH4)2SO4 has the greatest influence on SOA generation,come next with NH4NO3 and Na2SiO3·9H2O.
杨智博, 郭斌, 任爱玲, 刘子楠. 乙酸乙烯酯-NO2光氧化产生SOA的影响因素研究[J]. 现代化工, 2020, 40(11): 164-168.
YANG Zhi-bo, GUO Bin, REN Ai-ling, LIU Zi-nan. Study on influencing factors of SOA induced by photooxidation of vinyl acetate-NO2. Modern Chemical Industry, 2020, 40(11): 164-168.
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