International Journal of Chemical Kinetics · 1980 · 401 citations · 56 references
Natural SciencesChemistryAtmospheric ChemistryAtmospheric ScienceSpectroscopyPhotochemical KineticsPhotochemistryAtmospheric Lifetimes Of Trace GasesNear Ultraviolet ObservationsNear Ultraviolet SpectroscopyPhotoabsorption SpectraPhotodissociation KineticsPhotodissociation Processes
Abstract Atmospheric photodissociation rate coefficients and photodissociation lifetimes for nitromethane, methyl nitrite, and methyl nitrate were calculated as a function of altitude from their measured visible and near ultraviolet photoabsorption cross sections at 298 K. The lifetime of methyl nitrite is nearly independent of altitude and is approximately 2 min. From 0 to 50 km the lifetime of nitromethane varies from 10 to 0.5 hr, while that of methyl nitrate changes from 5.3 to 0.09 days, respectively.
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