DOI: 10.1016/j.atmosenv.2016.12.040
Scopus记录号: 2-s2.0-85007566494
论文题名: Multiphase reactivity of gaseous hydroperoxide oligomers produced from isoprene ozonolysis in the presence of acidified aerosols
作者: Riva M ; , Budisulistiorini S ; H ; , Zhang Z ; , Gold A ; , Thornton J ; A ; , Turpin B ; J ; , Surratt J ; D
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2017
卷: 152 起始页码: 314
结束页码: 322
语种: 英语
英文关键词: Criegee
; Heterogeneous reaction
; HOMs
; HR-ToF-CIMS
; SOA
Scopus关键词: Carbonyl compounds
; Carboxylic acids
; Chemical compounds
; Free radicals
; Gases
; Ionization of gases
; Isomers
; Isoprene
; Mass spectrometry
; Oligomers
; Organic coatings
; Ozone
; Phase composition
; Vaporization
; Chemical composition of seeds
; Criegee
; Gas phase composition
; Heterogeneous reactions
; High resolution mass spectrometry
; HOMs
; HR-ToF-CIMS
; Organic hydroperoxides
; Aerosols
; carboxylic acid
; ether
; hydroperoxide
; hydroxyl group
; hydroxyl radical
; isoprene
; oligomer
; aerosol
; aerosol composition
; chemical reaction
; gas
; hydroxyl radical
; ionization
; isoprene
; mass spectrometry
; oxide
; ozone
; polymer
; scavenging (chemistry)
; acidity
; aerosol
; Article
; chemical composition
; chemical reaction
; decomposition
; ionization
; mass spectrometry
; oxidation
; ozonolysis
; priority journal
; secondary organic aerosol
; ultra performance liquid chromatography
; volatilization
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: Ozonolysis of alkenes results in the formation of primary ozonides (POZs), which can subsequently decompose into carbonyl compounds and stabilized Criegee intermediates (sCIs). The sCIs generated from isoprene ozonolysis include the simplest congener, formaldehyde oxide (CH2OO), and isomers of C4-sCI. Although the bimolecular reaction with H2O is expected to be the main fate of sCIs, it was reported that sCIs can also react with carboxylic acids and/or organic hydroperoxides leading to gas-phase oligomeric compounds. While the impact of the gas-phase composition (H2O, sCI scavenger) on the formation of such products was recently studied, their fate remains unclear. In the present work, formation of oligomeric hydroperoxides from isoprene ozonolysis, proposed as reaction products composed of the sCI as a chain unit and formed from the insertion of sCI into a hydroperoxide or a carboxylic acid, was systematically examined in the presence of aerosol with varying compositions. The effect of hydroxyl (OH) radicals on the gas- and particle-phase compositions was investigated using diethyl ether as an OH radical scavenger. Thirty-four oligomeric compounds resulting from the insertion of sCIs into organic hydroperoxides or carboxylic acids were identified using iodide chemical ionization high-resolution mass spectrometry. Large reactive uptake onto acidified sulfate aerosol was observed for most of the characterized gaseous oligomeric species, whereas the presence of organic coatings and the lack of aerosol water significantly reduced or halted the reactive uptake of these species. These results indicate that highly oxidized molecules, such as hydroperoxides, could undergo multiphase reactions, which are significantly influenced by the chemical composition of seed aerosol. Furthermore, in addition to functionalization and accretion, decomposition and re-volatilization should be considered in SOA formation. © 2016 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82589
Appears in Collections: 气候变化事实与影响
There are no files associated with this item.
作者单位: Department of Environmental Sciences and Engineering, Gillings School of Global Public Health, The University of North Carolina at Chapel Hill, Chapel Hill, NC, United States; Department of Atmospheric Sciences, University of Washington, Seattle, WA, United States
Recommended Citation:
Riva M,, Budisulistiorini S,H,et al. Multiphase reactivity of gaseous hydroperoxide oligomers produced from isoprene ozonolysis in the presence of acidified aerosols[J]. Atmospheric Environment,2017-01-01,152