On the photolysis branching ratio of methyl ethyl ketone

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dc.contributor.authorZborowska, Anna G.
dc.contributor.authorMacInnis, Ceara Y.
dc.contributor.authorYe, Connie Z.
dc.contributor.authorOsthoff, Hans D.
dc.date.accessioned2021-06-21T15:39:26Z
dc.date.available2021-06-21T15:39:26Z
dc.date.issued2021-06-01
dc.description.abstractThe methyl ethyl ketone (MEK) photolysis branching ratio (α) was re-evaluated by an end product analysis and box model simulations with the Master Chemical Mechanism (MCM). Using light emitting diodes centered at 285 nm or 315 nm, MEK was irradiated in the presence of nitric oxide and oxygen to produce peroxyacetic and peroxypropanoic nitric anhydride, CH3C(O)O2NO2 (PAN) and C2H5C(O)O2NO2 (PPN), which were quantified by gas chromatography. Box model simulations indicated that PPN is partially produced as a secondary product from chemistry initiated by reaction of the hydroxyl radical (OH) with MEK. Under NOx-limited experimental conditions or in the presence of ethane as an OH quencher, the product distribution observed required α = (7±1)% + (1.1±0.7)×10-4×(T-298) for 250K < T < 300K (2σ uncertainty), independent of pressure (at pressures > 266 hPa) and consistent with current IUPAC recommendations.en_US
dc.description.grantingagencyNatural Sciences and Engineering Research Council (NSERC)en_US
dc.identifier.citationZborowska, A. G., MacInnis, C. Y., Connie, Z. Y., & Osthoff, H. D. (2021). On the photolysis branching ratio of methyl ethyl ketone. Atmospheric Environment, 254, 118383.en_US
dc.identifier.doihttp://dx.doi.org/10.1016/j.atmosenv.2021.118383en_US
dc.identifier.grantnumberRGPIN/03849-2016en_US
dc.identifier.urihttp://hdl.handle.net/1880/113513
dc.language.isoengen_US
dc.publisherElsevieren_US
dc.publisher.departmentChemistryen_US
dc.publisher.facultyScienceen_US
dc.publisher.hasversionacceptedVersionen_US
dc.publisher.institutionUniversity of Calgaryen_US
dc.publisher.policyhttps://www.elsevier.com/about/policies/sharingen_US
dc.rightsUnless otherwise indicated, this material is protected by copyright and has been made available with authorization from the copyright owner. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission.en_US
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0en_US
dc.subjectMethyl ethyl ketoneen_US
dc.subjectMEKen_US
dc.subjectphotolysis branching ratioen_US
dc.subjectend product studyen_US
dc.subjectMaster chemical mechanismen_US
dc.subjectMCMen_US
dc.titleOn the photolysis branching ratio of methyl ethyl ketoneen_US
dc.typejournal articleen_US
ucalgary.item.requestcopytrueen_US
ucalgary.scholar.levelFacultyen_US
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