Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
28212 | Journal of Photochemistry and Photobiology A: Chemistry | 2009 | 7 Pages |
Abstract
The photochemical rupture of CF3OC(O)OONO2 at 254 nm leads to the formation of NO2 + CF3OC(O)OO, and NO3 + CF3OC(O)O radicals. The study carried out at 297, 273 and 253 K leads to a quantum yield ϕNO3=0.18±0.03ϕNO3=0.18±0.03, and ϕNO2+ϕNO3=1.01±0.09ϕNO2+ϕNO3=1.01±0.09. To minimize the errors in both the determination of quantum yields and the analysis of atmospheric photochemical lifetimes, the study of the absorption cross-sections dependence with temperature between 297 and 245 K was undertaken. There is a clear increase of the cross-sections with temperature. The atmospheric photochemical lifetime of CF3OC(O)OONO2 and its comparison with thermal decomposition are presented.
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Authors
F.E. Malanca, M.D. Manetti, M.S. Chiappero, P. Gallay, G.A. Argüello,