Gas- and particle-phase products from the photooxidation of acenaphthene and acenaphthylene by OH radicals

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dc.contributor.author Riva, Matthieu
dc.contributor.author Healy, Robert M.
dc.contributor.author Flaud, Pierre-Marie
dc.contributor.author Perraudin, Emilie
dc.contributor.author Wenger, John C.
dc.contributor.author Villenave, Eric
dc.date.accessioned 2017-02-02T12:59:07Z
dc.date.available 2017-02-02T12:59:07Z
dc.date.issued 2017-11-30
dc.identifier.citation Riva, M., Healy, R. M., Flaud, P.-M., Perraudin, E., Wenger, J. C. and Villenave, E. (2017) 'Gas- and particle-phase products from the photooxidation of acenaphthene and acenaphthylene by OH radicals', Atmospheric Environment, 151, pp. 34-44. doi:10.1016/j.atmosenv.2016.11.063 en
dc.identifier.volume 151 en
dc.identifier.startpage 34 en
dc.identifier.endpage 44 en
dc.identifier.issn 1352-2310
dc.identifier.uri http://hdl.handle.net/10468/3554
dc.identifier.doi 10.1016/j.atmosenv.2016.11.063
dc.description.abstract 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. en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher Elsevier en
dc.rights © 2016 Elsevier Ltd. This manuscript version is made available under the CC-BY-NC-ND 4.0 license en
dc.rights.uri http://creativecommons.org/licenses/by-nc-nd/4.0/ en
dc.subject PAHs en
dc.subject Gas-phase en
dc.subject Atmospheric oxidation en
dc.subject Photooxidation en
dc.subject OH radicals en
dc.title Gas- and particle-phase products from the photooxidation of acenaphthene and acenaphthylene by OH radicals en
dc.type Article (peer-reviewed) en
dc.internal.authorcontactother John Wenger, Chemistry, University College Cork, Cork, Ireland. +353-21-490-3000 Email: j.wenger@ucc.ie en
dc.internal.availability Full text available en
dc.check.info Access to this item is restricted until 24 months after publication by the request of the publisher. en
dc.check.date 2018-11-30
dc.date.updated 2017-02-02T12:49:29Z
dc.description.version Accepted Version en
dc.internal.rssid 382018821
dc.contributor.funder European Commission en
dc.contributor.funder Seventh Framework Programme en
dc.contributor.funder Agence de l'Environnement et de la Maîtrise de l'Energie en
dc.description.status Peer reviewed en
dc.identifier.journaltitle Atmospheric Environment en
dc.internal.copyrightchecked No !!CORA!! en
dc.internal.licenseacceptance Yes en
dc.internal.IRISemailaddress j.wenger@ucc.ie en
dc.relation.project info:eu-repo/grantAgreement/EC/FP7::SP4::INFRA/228335/EU/Integration of European Simulation Chambers for Investigating Atmospheric Processes - Part 2/EUROCHAMP-2 en


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© 2016 Elsevier Ltd. This manuscript version is made available under the CC-BY-NC-ND 4.0 license Except where otherwise noted, this item's license is described as © 2016 Elsevier Ltd. This manuscript version is made available under the CC-BY-NC-ND 4.0 license
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