DOI: 10.1016/j.atmosenv.2017.09.036
Scopus记录号: 2-s2.0-85030671880
论文题名: Effects of inorganic seeds on secondary organic aerosol formation from photochemical oxidation of acetone in a chamber
作者: Ge S ; , Xu Y ; , Jia L
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2017
卷: 170 起始页码: 205
结束页码: 215
语种: 英语
英文关键词: Acetone
; Chamber
; Chemical compositions
; Inorganic salts
; SOA
Scopus关键词: Aerosols
; Chlorine compounds
; Esterification
; Esters
; Oxidation
; Rate constants
; Reaction kinetics
; Chamber
; Chemical compositions
; Esterification reactions
; Inorganic salts
; Inorganic seed particles
; Radical-radical reactions
; Secondary organic aerosols
; Sulfur containing compound
; Acetone
; acetone
; ammonium sulfate
; ester
; organic nitrate
; sodium chloride
; sodium nitrite
; volatile organic compound
; acetone
; aerosol formation
; aqueous solution
; chemical composition
; chlorine
; inorganic compound
; oxidation
; photochemistry
; Article
; atmosphere
; chemical composition
; esterification
; oxidation
; photolysis
; photooxidation
; priority journal
; secondary organic aerosol
; smog
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: Photochemical oxidations of acetone were studied under different inorganic seed (NaCl, (NH4)2SO4 and NaNO3) conditions in a self-made chamber. The results show that no secondary organic aerosol (SOA) can be formed in the experiments either in the absence of artificially added seed particles or in the presence of solid status of the added particles. Liquid water content is the key factor for the formation of SOA in the experiments with seeds. The amount of SOA was only about 4–7 μg m−3 in the experiments with the initial acetone of ∼15 ppm under different seed conditions. The analysis of SOA compositions by Exactive-Orbitrap mass spectrometer equipped with electro-spray interface (ESI-MS) shows that chlorine-containing and sulfur-containing compounds were detected in SOA formed from the experiments with NaCl and (NH4)2SO4 seeds, respectively, which were not identified in SOA from those with NaNO3. The compositions of SOA were mainly esters, organonitrates, hydroperoxides, etc. It is concluded that inorganic seed particles participated into the formation of SOA. Acetone SOA was mainly formed in the aqueous phase in which dissolved SOA precursors underwent further oxidation reactions, esterification reactions and/or radical-radical reactions. Our experiments further demonstrate that low-molecular-weight VOCs, such as acetone, can form SOA under certain conditions in the atmosphere, although their contributions to SOA may not be large. © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82490
Appears in Collections: 气候变化事实与影响
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作者单位: State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; Department of Atmospheric Chemistry and Environmental Sciences, College of Earth Sciences, University of Chinese Academy of Sciences, Beijing, China; Key Laboratory of Geographic Information Science of the Ministry of Education, School of Geographical Sciences, East China Normal University, 500 Dongchuan Road, Shanghai, China
Recommended Citation:
Ge S,, Xu Y,, Jia L. Effects of inorganic seeds on secondary organic aerosol formation from photochemical oxidation of acetone in a chamber[J]. Atmospheric Environment,2017-01-01,170