INFIQC 05475
INSTITUTO DE INVESTIGACIONES EN FISICO- QUIMICA DE CORDOBA
Unidad Ejecutora - UE
artículos
Título:
Photochemistry and absorption cross-section temperature dependence of trifluoromethoxycarbonyl peroxy nitrate (CF3OC(O)O2NO2)
Autor/es:
F. E. MALANCA; MARTÍN D. MANETTI; M. S. CHIAPPERO; P. GALLAY; G. A. ARGÜELLO
Revista:
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
Referencias:
Año: 2009 vol. 205 p. 44 - 50
ISSN:
1010-6030
Resumen:
The photochemical rupture of CF3OC(O)ONO2 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 NO3 = 0.18 ± 0.03, and NO2 + NO3 = 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.
