The role of symmetry in the mass independent isotope effect in ozone

Michalskia, Greg ; Bhattacharya, S. K. (2009) The role of symmetry in the mass independent isotope effect in ozone PNAS, 106 (14). pp. 5493-5496. ISSN 0027-8424

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Official URL: http://www.pnas.org/content/106/14/5493.short

Related URL: http://dx.doi.org/10.1073/pnas.0812755106

Abstract

Understanding the internal distribution of "anomalous" isotope enrichments has important implications for validating theoretical postulates on the origin of these enrichments in molecules such as ozone and for understanding the transfer of these enrichments to other compounds in the atmosphere via mass transfer. Here, we present an approach, using the reaction NO2- + O3, for assessing the internal distribution of the Δ17O anomaly and the δ18O enrichment in ozone produced by electric discharge. The Δ17O results strongly support the symmetry mechanism for generating mass independent fractionations, and theδ18O results are consistent with published data. Positional Δ17O and δ18O enrichments in ozone can now be more effectively used in photochemical models that use mass balance oxygen atom transfer mechanisms to infer atmospheric oxidation chemistry.

Item Type:Article
Source:Copyright of this article belongs to The National Academy of Sciences.
Keywords:Oxygen; Nitrate; Nitrite; Oxidation
ID Code:87568
Deposited On:19 Mar 2012 13:45
Last Modified:19 Mar 2012 13:45

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