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Ultraviolet spectrum of CF 3 OH: Upper limits to the absorption cross sections
Author(s) -
Molina Luisa T.,
Molina Mario J.
Publication year - 1996
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/96gl00313
Subject(s) - stratosphere , ultraviolet , photodissociation , radical , ozone , absorption (acoustics) , photochemistry , absorption spectroscopy , ozone depletion , spectral line , wavelength , near ultraviolet , chemistry , analytical chemistry (journal) , materials science , optics , physics , atmospheric sciences , environmental chemistry , organic chemistry , astronomy
The ultraviolet spectra of gaseous and liquid samples of the species CF 3 OH have been investigated in the laboratory. Upper limits to the absorption cross sections in the 190–300 nm wavelength range were determined. The species CF 3 OH is produced in the stratosphere by hydrogen abstraction reactions involving the CF 3 O radical; the upper limits to the ultraviolet absorption cross sections established in this work imply that photolysis of CF 3 OH in the stratosphere is too slow to regenerate CF 3 O radicals at rates significant for ozone depletion.
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