DOI: 10.1016/j.atmosenv.2019.117227
论文题名: Secondary organic aerosols from aromatic hydrocarbons and their contribution to fine particulate matter in Atlanta, Georgia
作者: Al-Naiema I.M. ; Offenberg J.H. ; Madler C.J. ; Lewandowski M. ; Kettler J. ; Fang T. ; Stone E.A.
刊名: Atmospheric Environment
ISSN: 1352-2310
出版年: 2020
卷: 223 语种: 英语
英文关键词: Aromatization
; Atmospheric aerosols
; Chemistry
; Isomers
; Mineral oils
; Naphthalene
; Organic carbon
; Volatile organic compounds
; Fine particulate matter
; Nitro-aromatics
; P-cresol oxidation
; Particulate Matter
; Secondary organic aerosols
; Secondary organic carbons (SOC)
; Source apportionment
; Tracer
; Particles (particulate matter)
学科: Chemistry
; Nitroaromatics
; Particulate matter
; Source apportionment
; Tracer
中文摘要: Tracers of secondary organic aerosols (SOA) from thirteen aromatic hydrocarbons were quantified in laboratory smog chamber experiments. Class-specific SOA tracers emerged, including 2,3-dihydroxy-4-oxo-pentatonic acid (DHOPA) from monoaromatic volatile organic compounds (VOCs), phthalic acid from naphthalene and 1-methylnaphthalene, and methyl-nitrocatechol isomers from o,m,p-cresol oxidation. Organic carbon mass fractions (fSOC) for these and other tracers were determined and extend the SOA tracer method widely used to apportion biogenic secondary organic carbon (SOC). The extended SOA tracer model was applied to evaluate the sources of SOC in Atlanta, GA during summer 2015 and winter 2016 after modifying the chamber-derived fSOC values to reflect SOA yields and local VOC levels (fSOC’). Monoaromatic, diaromatic, and cresol SOC contributed an average of 24%, 8%, and 0.12% of organic carbon (OC) mass during summer and 17%, 5%, and 0.27% during winter, respectively. Cresol SOC peaked during winter and was highly correlated with levoglucosan (r = 0.83, p < 0.001), consistent with its' precursors originating from biomass burning. Together, aromatic, biogenic, and biomass burning derived SOC accounted for an average of 77% and 28% of OC in summer and winter, respectively. The new understanding of SOA composition from aromatic VOCs advances the tracer-based method by including important precursors of SOC and enables a better understanding of the sources of atmospheric aerosol. © 2019 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/161004
Appears in Collections: 气候变化与战略
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作者单位: Department of Chemistry, University of Iowa, Iowa City, IA 52242, United States; National Exposure Research Laboratory, U. S. Environmental Protection Agency, Research Triangle Park, NC 27711, United States; School of Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta, GA 30332, United States; Department of Chemical and Biochemical Engineering, University of Iowa, Iowa City, IA 52242, United States
Recommended Citation:
Al-Naiema I.M.,Offenberg J.H.,Madler C.J.,et al. Secondary organic aerosols from aromatic hydrocarbons and their contribution to fine particulate matter in Atlanta, Georgia[J]. Atmospheric Environment,2020-01-01,223