DOI: 10.1016/j.atmosenv.2017.09.053
Scopus记录号: 2-s2.0-85030309004
论文题名: Direct observation of new particle formation during ozonolysis of isoprene and ethene competing against the growth of preexisting particles
作者: Inomata S ; , Sato K ; , Sakamoto Y ; , Hirokawa J
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2017
卷: 170 起始页码: 149
结束页码: 155
语种: 英语
英文关键词: 1 nm SMPS
; Criegee intermediate
; Isoprene ozonolysis
; Oligomeric hydroperoxide
; Secondary organic aerosol
Scopus关键词: Aerosols
; Ethylene
; Isoprene
; Oligomers
; Shape memory effect
; 1 nm SMPS
; Criegee intermediates
; Hydroperoxides
; Ozonolysis
; Secondary organic aerosols
; Ozone
; alkene
; ammonium nitrate
; ethylene
; hydroperoxide
; hydroxyl radical
; isoprene
; oligomer
; aerosol formation
; ammonium nitrate
; chemical process
; diameter
; element mobility
; ethane
; ethylene
; inorganic compound
; isoprene
; nitrate
; organic compound
; particle size
; size distribution
; Article
; chemical reaction
; oxidation
; ozonolysis
; priority journal
; quantitative analysis
; reaction time
; secondary organic aerosol
; surface property
; water vapor
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: Secondary organic aerosol formation during the ozonolysis of isoprene and ethene in the presence of ammonium nitrate seed particles (surface area concentrations = (0.8–3) × 107 nm2 cm−3) was investigated using a 1 nm scanning mobility particle sizer. Based on the size distribution of formed particles, particles with a diameter smaller than the minimum diameter of the seed particles (less than ∼6 nm) formed under dry conditions, but the formation of such particles was substantially suppressed during isoprene ozonolysis and was not observed during ethane ozonolysis under humid conditions. We propose that oligomeric hydroperoxides generated by stabilized Criegee intermediates (sCIs), including C1-sCI (CH2OO), contribute to new particle formation while competing to be taken up onto preexisting particles. The OH reaction products of isoprene and ethene seem to not contribute to new particle formation; however, they are taken up onto preexisting particles and contribute to particle growth. © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82777
Appears in Collections: 气候变化事实与影响
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作者单位: National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki, Japan; Graduate School of Global Environmental Studies, Kyoto University, Yoshida Nihonmatsu-cho, Sakyo-ku, Kyoto, Japan; Graduate School of Human and Environmental Studies, Kyoto University, Yoshida Nihonmatsu-cho, Sakyo-ku, Kyoto, Japan; Faculty of Environmental Earth Science, Hokkaido University, Kita 10 Nishi 5, Sapporo, Hokkaido, Japan
Recommended Citation:
Inomata S,, Sato K,, Sakamoto Y,et al. Direct observation of new particle formation during ozonolysis of isoprene and ethene competing against the growth of preexisting particles[J]. Atmospheric Environment,2017-01-01,170