Near-ultraviolet absorption cross sections of nitrophenols and their potential influence on tropospheric oxidation capacity

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dc.contributor.author Chen, Jun
dc.contributor.author Wenger, John C.
dc.contributor.author Venables, Dean S.
dc.date.accessioned 2012-11-20T17:10:49Z
dc.date.available 2012-11-20T17:10:49Z
dc.date.issued 2011-09-29
dc.identifier.citation CHEN, J., WENGER, J. C. & VENABLES, D. S. 2011. Near-Ultraviolet Absorption Cross Sections of Nitrophenols and Their Potential Influence on Tropospheric Oxidation Capacity. The Journal of Physical Chemistry A, 115, 12235-12242. doi: http://dx.doi.org/10.1021/jp206929r en
dc.identifier.volume 115 en
dc.identifier.issued 44 en
dc.identifier.startpage 12235 en
dc.identifier.endpage 12242 en
dc.identifier.issn 1089-5639
dc.identifier.uri http://hdl.handle.net/10468/791
dc.identifier.doi 10.1021/jp206929r
dc.description.abstract Nitrophenols and methylnitrophenols have been identified as photolytic precursors of nitrous acid, HONO, but their gas-phase absorption has not previously been reported. In this study, the absorption cross sections of 2-nitrophenol, 3-methyl-2-nitrophenol, and 4-methyl-2-nitrophenol were measured from 320 to 450 nm using incoherent broad-band cavity enhanced absorption spectroscopy (IBBCEAS). The benzaldehyde absorption spectrum wasmeasured to validate the approach and was in good agreement with literature spectra. The nitrophenol absorption cross sections are large (ca. 10-17 cm2 molecule-1)  and blue-shifted about 20 nm compared to previously measured solution spectra. Besides forming HONO, nitrophenol absorption influences other photochemistry by reducing the available actinic flux. The magnitudes of both effects are evaluated as a function of solar zenith angle, and nitrophenol absorption is shown to lower the photolysis rates of O3 and NO2. en
dc.description.sponsorship European Commission (EU FP7 project EUROCHAMP2 (grant no. 228335)); Science Foundation Ireland (06/RFP/CHP055) en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher American Chemical Society en
dc.rights Copyright © 2011 American Chemical Society. This document is the Accepted Manuscript version of a Published Work that appeared in final form in The Journal of Physical Chemistry A, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see http://pubs.acs.org/doi/abs/10.1021/jp206929r en
dc.subject Photolysis en
dc.subject Benzaldehyde en
dc.subject Broadband cavity enhanced absorption spectroscopy en
dc.subject Atmospheric simulation chamber en
dc.subject tropospheric oxidation en
dc.subject.lcsh Atmospheric chemistry en
dc.subject.lcsh Absorption spectra en
dc.title Near-ultraviolet absorption cross sections of nitrophenols and their potential influence on tropospheric oxidation capacity en
dc.type Article (peer-reviewed) en
dc.internal.authorurl http://research.ucc.ie/profiles/D004/dvenables en
dc.internal.authorcontactother Dean Venables, Chemistry, University College Cork, Cork, Ireland. +353-21-490-3000 Email: d.venables@ucc.ie en
dc.internal.availability Full text available en
dc.date.updated 2012-10-23T15:10:29Z
dc.description.version Accepted Version en
dc.internal.rssid 111265469
dc.contributor.funder European Commission en
dc.contributor.funder Science Foundation Ireland en
dc.description.status Peer reviewed en
dc.identifier.journaltitle Journal of Physical Chemistry A en
dc.internal.copyrightchecked Yes. CORA - ROMEO and Journal publisher website - ACS Journal publishing agreement. en
dc.internal.licenseacceptance Yes en
dc.internal.IRISemailaddress d.venables@ucc.ie en


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