DOI: 10.1016/j.atmosenv.2016.11.063
Scopus记录号: 2-s2.0-85008613367
论文题名: Gas- and particle-phase products from the photooxidation of acenaphthene and acenaphthylene by OH radicals
作者: Riva M ; , Healy R ; M ; , Flaud P ; -M ; , Perraudin E ; , Wenger J ; C ; , Villenave E
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2017
卷: 151 起始页码: 34
结束页码: 44
语种: 英语
英文关键词: Atmospheric oxidation
; Gas-phase
; OH radicals
; PAHs
; Photooxidation
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: This work is focused on the gas-phase oxidation of acenaphthylene and acenaphthene by OH radicals and associated secondary organic aerosol (SOA) formation under low and high-NOx conditions. Experiments were carried out in an atmospheric simulation chamber using a proton transfer reaction time-of-flight-mass spectrometer (PTR-TOF-MS) and an aerosol time-of-flight-mass spectrometer (ATOFMS) to chemically characterize the gas- and particle-phase products, respectively. Due to the structures of these two aromatic compounds, the proposed chemical mechanisms exhibit some differences. In the case of acenaphthene, H-atom abstraction from the saturated cyclopenta-fused ring was found to be competitive with the OH-addition to the aromatic rings. During the photooxidation of acenaphthene using nitrous acid (HONO), aromatic ring-opening products such as indanone and indanone carbaldehyde, generated through OH addition to the aromatic ring, were formed in higher yields compared to low-NOx conditions. In the case of acenaphthylene, OH addition to the unsaturated cyclopenta-fused ring was strongly favored. Hence, ring-retaining species such as acenaphthenone and acenaphthenequinone, were identified as the main reaction products in both gas- and particle-phases, especially under high-NOx conditions. Subsequent SOA formation was observed in all experiments and SOA yields were determined under low/high-NOx conditions to be 0.61/0.46 and 0.68/0.55 from the OH-initiated oxidation of acenaphthylene and acenaphthene, respectively. © 2016 Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82221
Appears in Collections: 气候变化事实与影响
There are no files associated with this item.
作者单位: Univ. Bordeaux, EPOC, UMR 5805, Talence Cedex, France; CNRS, EPOC, UMR 5805, Talence Cedex, France; Department of Chemistry and Environmental Research Institute, University College Cork, Cork, Ireland; Environmental Monitoring and Reporting Branch, Ontario Ministry of the Environment and Climate Change, Toronto, Canada
Recommended Citation:
Riva M,, Healy R,M,et al. Gas- and particle-phase products from the photooxidation of acenaphthene and acenaphthylene by OH radicals[J]. Atmospheric Environment,2017-01-01,151