Kinetics of NO and NO2 evolution from illuminated frozen nitrate solutions

The Journal of Physical Chemistry. a
C S BoxeR C Cohen

Abstract

The release of NO and NO2 from frozen aqueous NaNO3 irradiated at 313 nm was studied using time-resolved spectroscopic techniques. The kinetic behavior of NO and NO2 signals during on-and-off illumination cycles confirms that NO2 is a primary photoproduct evolving from the outermost ice layers and reveals that NO is a secondary species generated deeper in the ice, whence it eventually emerges due to its inertness and larger diffusivity. NO is shown to be more weakly held than NO2 by ice in thermal desorption experiments on preirradiated samples. The partial control of gaseous emissions by mass transfer, and hence by the morphology and metamorphisms of polycrystalline ice, is established by (1) the nonmonotonic temperature dependence of NO and NO2 signals upon stepwise warming under continuous illumination, (2) the fact that the NO, NO2 or NOx (NOx identical with NO + NO2) amounts released in bright thermograms performed under various heating ramps fail to scale with photon dose, due to irreversible losses in the adsorbed state. Because present NO/NO2 ratios are up to 10-fold smaller than those determined over sunlit snowpacks, we infer that the immediate precursors to NO mostly absorb at lambda > lambda(max) (NO3-) approximatel...Continue Reading

References

Jul 13, 2006·The Journal of Physical Chemistry. a·C S BoxeR C Cohen
Jul 15, 2006·The Journal of Physical Chemistry. a·Eoin RiordanJohn R Sodeau

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Citations

Jul 6, 2014·The Journal of Chemical Physics·Tesfaye A BerhanuJoël Savarino
Jan 3, 2016·The Journal of Chemical Physics·Edgar A EngelRichard J Needs
Feb 12, 2015·The Journal of Physical Chemistry. a·Guillaume MarcottePhilippe Parent
Sep 26, 2012·The Journal of Physical Chemistry. B·Jun-Ying YuYun-Hong Zhang
Jul 12, 2013·The Journal of Physical Chemistry. a·Jonathan P Bower, Cort Anastasio
Feb 5, 2011·The Journal of Physical Chemistry. a·Nicole K RichardsBarbara J Finlayson-Pitts
Apr 6, 2011·The Journal of Physical Chemistry. a·Sanford A AsherSteven J Geib
Mar 10, 2017·The Journal of Physical Chemistry. a·Konnor K JonesMatthew J Nee
Aug 9, 2008·Physical Chemistry Chemical Physics : PCCP·Man XuHeather C Allen
Sep 18, 2013·Physical Chemistry Chemical Physics : PCCP·Nicole K Richards-HendersonBarbara J Finlayson-Pitts
Apr 4, 2007·The Journal of Physical Chemistry. a·Jennie L ThomasDouglas J Tobias
Jul 30, 2008·The Journal of Physical Chemistry. a·Keiichi SatoYasuaki Maeda
Jun 19, 2009·The Journal of Physical Chemistry. a·Gayan Rubasinghege, Vicki H Grassian
Jan 12, 2010·The Journal of Physical Chemistry. a·Josué Bock, Hans-Werner Jacobi
Oct 14, 2010·The Journal of Physical Chemistry. a·Stig HellebustJohn R Sodeau
Apr 19, 2018·Environmental Science & Technology·Alexander S McFallCort Anastasio
Mar 25, 2017·Environmental Science & Technology·Katherine B BenedictCort Anastasio
Aug 10, 2006·Journal of the American Chemical Society·Marcelo I GuzmánMichael R Hoffmann
Feb 1, 2007·The Journal of Physical Chemistry. a·Stig HellebustJohn R Sodeau
Aug 21, 2007·The Journal of Physical Chemistry. a·Norimichi Takenaka, Hiroshi Bandow

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