Halocarbons (Halocarbonated products)

Chlorofluorocarbons: mostly of anthropogenic origin, containing carbon and halogens such as chlorine, bromine, fluorine and sometimes hydrogen. Chlorofluorocarbons (CFCs) began to occur in the 30's for cooling. Subsequently used as aerosol propellants in the manufacture of foam, etc.. There are natural springs that occur in the related compounds, such as metilhaluros.

There are no sinks for CFCs in the troposphere and because of their reactivity are almost nonexistent transported to the stratosphere where they are degraded by the action of UV, at which time release free chlorine atoms that actually destroy ozone.

Hydrochlorofluorocarbons (HCFCs) and hydrofluorocarbons (HFCs): compounds of anthropogenic origin which are used as substitutes for CFCs, as only transitional, as have effects of greenhouse gas. These are degraded in the troposphere by the action of photo -

For the long-lived greenhouse gases are holding thousands of times more powerful than CO2.

CFCs increase (Miller, 1991

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