DOI: 10.1016/j.atmosenv.2017.07.022
Scopus记录号: 2-s2.0-85025481197
论文题名: Effects of NOx on the molecular composition of secondary organic aerosol formed by the ozonolysis and photooxidation of Α-pinene
作者: Park J ; -H ; , Babar Z ; B ; , Baek S ; J ; , Kim H ; S ; , Lim H ; -J
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2017
卷: 166 起始页码: 263
结束页码: 275
语种: 英语
英文关键词: Fourier transform ion cyclotron resonance mass spectrometry
; Molecular composition
; NOx effect
; Secondary organic aerosol
; α-Pinene
Scopus关键词: Aerosols
; Atoms
; Cyclotron resonance
; Cyclotrons
; Electron cyclotron resonance
; Electrospray ionization
; Fourier series
; Ions
; Mass spectrometry
; Monoterpenes
; Nitrogen
; Nitrogen oxides
; Oligomers
; Ozone
; Photooxidation
; Spectrometry
; Electrospray ionization (ESI)
; Fourier transform ion cyclotron resonance mass spectrometry
; Molecular compositions
; Molecular formulae
; Number of carbon atoms
; Physicochemical parameters
; Secondary organic aerosols
; Ultrahigh resolution
; Olefins
; carbon
; hydroxyl radical
; nitrogen
; organic carbon
; organic nitrogen
; pinene
; tracer
; aerosol
; chemical composition
; Fourier transform
; ionization
; mass spectrometry
; nitrous oxide
; oxidation
; photooxidation
; physicochemical property
; smog
; terpene
; Article
; chemical composition
; chemical structure
; dimerization
; ion cyclotron resonance mass spectrometry
; negative ion electrospray
; oligomerization
; oxidation
; oxygenation
; ozonolysis
; photooxidation
; physical chemistry
; priority journal
; room temperature
; 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: The molecular composition of secondary organic aerosol (SOA), obtained from the ozonolysis and photooxidation of α-pinene, was investigated using ultrahigh-resolution Fourier transform-ion cyclotron resonance mass spectrometry (FT-ICR MS) in negative ion mode electrospray ionization (ESI). SOA formation was performed in an indoor smog chamber. The molecular formulae of individual species were identified on the basis of the measured ionic mass using guidelines, such as number of atoms, elemental ratios, and the nitrogen rule. In each of the SOAs obtained, 815–3501 monomeric and oligomeric (mainly dimeric) species were identified below m/z 800. From ozonolysis, mainly 95% of the typical oxygenated species (CHO) were detected, whereas from photooxidation under high NOx conditions, 32% of nitrogen-containing species (CHON) were detected. Several common intense species (e.g., C9H14O6, C10H14O6, C10H16O5, C17H26O7, C19H28O9, C10H15NO8, and C10H15NO9) could be listed as candidate tracers for the conventional tracers for α-pinene SOA. The increased percentage of CHON as a primary effect of NOx on the SOA composition evidently affected other physicochemical parameters, such as elemental ratios (i.e., O/C, H/C, and N/C), the double-bond equivalent (DBE), the carbon oxidation state (OSC), and the organic-mass-to-carbon ratio (OM/OC). The O/C and OM/OC for CHON were greater than those observed for CHO, indicating that nitrogen preferentially exists in the oxidized form (e.g., -ONO2). The complexity of oligomerization was observed in DBE and OM/OC according to the number of carbon atoms. © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82326
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Environmental Engineering, Kyungpook National University, Daegu, South Korea; Mass Spectrometry & Advanced Instrumentation Group, Korea Basic Science Institute, Cheongju, South Korea; ASTA Inc., Ltd., Suwon, South Korea
Recommended Citation:
Park J,-H,, Babar Z,et al. Effects of NOx on the molecular composition of secondary organic aerosol formed by the ozonolysis and photooxidation of Α-pinene[J]. Atmospheric Environment,2017-01-01,166