The role of symmetry in the mass independent isotope effect in ozone
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 the δ18O 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.
oxygen, nitrate, oxidation
Date of this Version
Michalski, Greg and Bhattacharya, S. K., "The role of symmetry in the mass independent isotope effect in ozone" (2009). Department of Earth, Atmospheric, and Planetary Sciences Faculty Publications. Paper 62.
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