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      NO3 radical production from the reaction between the Criegee intermediate CH2OO and NO2

      Author(s): , , ,
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      Journal: Physical Chemistry Chemical Physics
      Publisher: Royal Society of Chemistry (RSC)

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          Abstract

          Formation of the NO3 radical was observed following photolysis of the CH2I2 + O2 system at 248 nm under ambient atmospheric boundary layer conditions (~760 Torr and 297 K) in the presence of NO2. The Criegee intermediate (CI) CH2OO is believed to be responsible for the NO3 production. The potential of such reactions to enhance the rate of NO3 production in the atmosphere is discussed.

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          Evaluated kinetic and photochemical data for atmospheric chemistry: Volume I - gas phase reactions of Ox, HOx, NOx and SOx species

          J. N. Crowley, R. Hampson, R. G. Hynes … (2004)
          Article 0 comments Cited 265 times – based on 0 reviews     Review now
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            Evaluated Kinetic and Photochemical Data for Atmospheric Chemistry: Supplement III. IUPAC Subcommittee on Gas Kinetic Data Evaluation for Atmospheric Chemistry

            D. Baulch, J. Troe, R. Hampson … (1989)
            Article 0 comments Cited 188 times – based on 0 reviews     Review now
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              Direct kinetic measurements of Criegee intermediate (CH₂OO) formed by reaction of CH₂I with O₂.

              Oliver Welz, John D Savee, David Osborn … (2012)
              Ozonolysis is a major tropospheric removal mechanism for unsaturated hydrocarbons and proceeds via "Criegee intermediates"--carbonyl oxides--that play a key role in tropospheric oxidation models. However, until recently no gas-phase Criegee intermediate had been observed, and indirect determinations of their reaction kinetics gave derived rate coefficients spanning orders of magnitude. Here, we report direct photoionization mass spectrometric detection of formaldehyde oxide (CH(2)OO) as a product of the reaction of CH(2)I with O(2). This reaction enabled direct laboratory determinations of CH(2)OO kinetics. Upper limits were extracted for reaction rate coefficients with NO and H(2)O. The CH(2)OO reactions with SO(2) and NO(2) proved unexpectedly rapid and imply a substantially greater role of carbonyl oxides in models of tropospheric sulfate and nitrate chemistry than previously assumed.
              Article 0 comments Cited 187 times – based on 0 reviews     Review now
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                Author and article information

                Journal
                Journal ID (publisher-id): PPCPFQ
                Title: Physical Chemistry Chemical Physics
                Abbreviated Title: Phys. Chem. Chem. Phys.
                Publisher: Royal Society of Chemistry (RSC)
                ISSN (Print): 1463-9076
                ISSN (Electronic): 1463-9084
                Publication date Created: 2013
                Publication date (Print): 2013
                Volume: 15
                Issue: 40
                Page: 17070
                Article
                DOI: 10.1039/c3cp53024h
                PubMed ID: 24030640
                SO-VID: 8aec8661-13ff-436b-9a16-46c97d14fab5
                Copyright © © 2013
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