Efficient photochemical generation of peroxycarboxylic nitric anhydrides with ultraviolet light-emitting diodes

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dc.contributor.authorRider, N. D.
dc.contributor.authorTaha, Y. M.
dc.contributor.authorOdame-Ankrah, C. A.
dc.contributor.authorHuo, J. A.
dc.contributor.authorTokarek, T. W.
dc.contributor.authorCairns, E.
dc.contributor.authorMoussa, S. G.
dc.contributor.authorLiggio, J.
dc.contributor.authorOsthoff, H. D.
dc.date.accessioned2021-06-29T02:40:32Z
dc.date.available2021-06-29T02:40:32Z
dc.date.issued2015-07-08
dc.description.abstractPhotochemical sources of peroxycarboxylic nitric anhydrides (PANs) are utilized in many atmospheric measurement techniques for calibration or to deliver an internal standard. Conventionally, such sources rely on phosphor-coated low-pressure mercury (Hg) lamps to generate the UV light necessary to photo-dissociate a dialkyl ketone (usually acetone) in the presence of a calibrated amount of nitric oxide (NO) and oxygen (O2). In this manuscript, a photochemical PAN source in which the Hg lamp has been replaced by arrays of ultraviolet light-emitting diodes (UV-LEDs) is described. The output of the UV-LED source was analyzed by gas chromatography (PAN-GC) and thermal dissociation cavity ring-down spectroscopy (TD-CRDS). Using acetone, diethyl ketone (DIEK), diisopropyl ketone (DIPK), or di-n-propyl ketone (DNPK), respectively, the source produces peroxyacetic (PAN), peroxypropionic (PPN), peroxyisobutanoic (PiBN), or peroxy-n-butanoic nitric anhydride (PnBN) from NO in high yield (> 90 %). Box model simulations with a subset of the Master Chemical Mechanism (MCM) were carried out to rationalize product yields and to identify side products. The present work demonstrates that UV-LED arrays are a viable alternative to current Hg lamp setups.en_US
dc.description.grantingagencyNatural Sciences and Engineering Research Council (NSERC)en_US
dc.identifier.citationRider, N. D., Taha, Y. M., Odame-Ankrah, C. A., Huo, J. A., Tokarek, T. W., Cairns, E., … Osthoff, H. D. (2015). Efficient photochemical generation of peroxycarboxylic nitric anhydrides with ultraviolet light-emitting diodes. Atmospheric Measurement Techniques, 8(7), 2737–2748. doi:10.5194/amt-8-2737-2015en_US
dc.identifier.doihttp://dx.doi.org/10.5194/amt-8-2737-2015en_US
dc.identifier.grantnumberRGPIN/03849-2016en_US
dc.identifier.urihttp://hdl.handle.net/1880/113556
dc.language.isoengen_US
dc.publisherEuropean Geosciences Unionen_US
dc.publisher.departmentChemistryen_US
dc.publisher.facultyScienceen_US
dc.publisher.hasversionpublishedVersionen_US
dc.publisher.institutionUniversity of Calgaryen_US
dc.rights© Author(s) 2015en_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0en_US
dc.titleEfficient photochemical generation of peroxycarboxylic nitric anhydrides with ultraviolet light-emitting diodesen_US
dc.typejournal articleen_US
ucalgary.item.requestcopytrueen_US
ucalgary.scholar.levelFacultyen_US
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