Atmospheric photodissociation lifetimes for nitromethane, methyl nitrite, and methyl nitrate

International Journal of Chemical Kinetics - Tập 12 Số 4 - Trang 231-240 - 1980
William D. Taylor1, T. D. Allston1, M. J. Moscato1, G.B. Fazekas1, Roman Kozłowski1, G. A. Takacs1
1Department of Chemistry, Rochester Institute of Technology, Rochester, New York 14623

Tóm tắt

AbstractAtmospheric 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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