DOI: 10.1016/j.atmosenv.2016.12.031
Scopus记录号: 2-s2.0-85010918201
论文题名: Molecular formula composition of Β-caryophyllene ozonolysis SOA formed in humid and dry conditions
作者: Kundu S ; , Fisseha R ; , Putman A ; L ; , Rahn T ; A ; , Mazzoleni L ; R
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2017
卷: 154 起始页码: 70
结束页码: 81
语种: 英语
英文关键词: FT-ICR
; High resolution mass spectrometry
; Ozonolysis
; Smog-chamber
; SOA
; β-caryophyllene
Scopus关键词: Carbon
; Chemical reactions
; Cyclohexane
; Mass spectrometry
; Negative ions
; Ozone
; Spectrometry
; Caryophyllene
; FT-ICR
; High resolution mass spectrometry
; Ozonolysis
; Smog chambers
; C (programming language)
; beta pinene
; carbon
; caryophyllene
; cyclohexane derivative
; isoprene
; limonene
; pinene
; atmospheric chemistry
; chemical alteration
; chemical reaction
; essential oil
; Fourier transform
; humidity
; mass spectrometry
; molecular analysis
; aldol reaction
; Article
; chemical composition
; controlled study
; electrospray mass spectrometry
; humidity
; ion cyclotron resonance mass spectrometry
; mass spectrometry
; molecular weight
; noise
; ozonolysis
; polymerization
; priority journal
; secondary organic aerosol
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: We studied the molecular formula composition of six β-caryophyllene SOA samples using ultrahigh resolution Fourier transform ion cyclotron resonance mass spectrometry under various reaction conditions. The SOA samples were generated in dry or low relative humidity (RH) chamber conditions with or without cyclohexane. All of the studied SOA mass spectra have three distinct clusters of hundreds of negative ions referred to as Group I (100 < m/z < 400), Group II (400 < m/z < 700) and Group III (700 < m/z < 1 000) compounds. C14-16H22-28O2-11, C28-29H42-48O6-16and C42-43H68-70O14-16were observed as highly abundant organic compounds in the compound class of Group I, II and III, respectively. The relative intensities of most analytes were higher in humid conditions compared to those in dry conditions, indicating the importance of water-dependent reactions and the catalytic role of water both in the presence and absence of cyclohexane. In addition, molecular formulas with higher average carbon numbers were observed in humid SOA than in dry SOA in the absence of cyclohexane, suggesting a decrease of cleavage reactions in humid condition. This study characterizes β-caryophyllene ozonolysis SOA based on ultrahigh mass resolution and demonstrates the significance of humidity in terms of the molecular distributions and relative abundances of the analytes. We also discuss the possible mechanism for the formation of Group I-III compounds based on the current understanding of SOA formation in the atmosphere. © 2016 Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82300
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Chemistry, Michigan Technological University, Houghton, MI, United States; Atmospheric Science Program, Michigan Technological University, Houghton, MI, United States; Earth and Environmental Sciences, Los Alamos National Laboratory, Los Alamos, NM, United States; Department of Chemistry, University of Massachusetts - AmherstMA, United States
Recommended Citation:
Kundu S,, Fisseha R,, Putman A,et al. Molecular formula composition of Β-caryophyllene ozonolysis SOA formed in humid and dry conditions[J]. Atmospheric Environment,2017-01-01,154