Rate of reaction of IO radicals with dimethylsulfide

Details Rate of reaction of IO radicals with dimethylsulfide Rate of reaction of IO radicals with dimethylsulfide

Oct 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990jgr....9518547d&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 95, Oct. 20, 1990, p. 18547-18553.

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Iodine Compounds, Photolysis, Reaction Kinetics, Temporal Distribution, Absorption Spectroscopy, Chemical Reactions, Laser Applications, Radicals

Scientific paper

The kinetics of the reaction of IO radicals with dimethylsulfide has been investigated at 298 K using time-resolved long-pathlength absorption spectroscopy to monitor the temporal behavior of IO following 351-nm laser flash photolysis of NO2/I2/CH3SCH3(DMS)/N2/O2 mixtures. An upper limit bimolecular rate constant for the IO + DMS reaction of 3.5 x 10 to the -14th cu cm/molecule s was obtained; this upper limit is nearly 3 orders of magnitude slower than two previously reported measurements. These results suggest that coupling of the marine sulfur and iodine cycles via the IO + DMS reaction is negligible.

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