Ar. Ravishankara et Er. Lovejoy, ATMOSPHERIC LIFETIME, ITS APPLICATION AND ITS DETERMINATION - CFC-SUBSTITUTES AS A CASE-STUDY, Journal of the Chemical Society. Faraday transactions, 90(15), 1994, pp. 2159-2169
Citations number
59
Categorie Soggetti
Chemistry Physical","Physics, Atomic, Molecular & Chemical
The concept of atmospheric lifetime, its application in atmospheric ch
emistry, and its use in defining environmental acceptability indices s
uch as the ozone depletion potential and the global warming potential
are described. The determination of the atmospheric lifetime from labo
ratory measured chemical kinetic and photochemical parameters is highl
ighted. A brief description of the laboratory methods used to determin
e kinetic parameters and the difficulties encountered in measuring the
m are given. In all these descriptions and discussions, chlorofluoroca
rbons (CFCs) and their substitutes are used as examples. The environme
ntal acceptability of the currently proposed CFC substitutes, the hydr
ochlorofluorocarbons (HCFCs) and hydrofluorocarbons (HFCs) are discuss
ed. Lastly, the question is raised: Should atmospheric lifetime be use
d as an index of accept ability?