Environmental tracers are natural or man made anthropogenic compounds or isotopes that are widely distributed in the near-surface environment. Variations in their quantities can be used to determine pathways and timescales of environmental processes. They include naturally occurring isotopes such as carbon and anthropogenic tracers such as Chlorofluorcarbons CFCs.
CFCs are frquently used for dating young groundwater, see the project section for examples.
Kluwer Acadmic Press. Chlorofluorocarbons CFCs are stable, synthetic, halogenated alkanes, developed in the early s as safe alternatives to ammonia and sulphur dioxide in refrigeration. CFCs are nonflammable, noncorrosive, nonexplosive, very low in toxicity, and have physical properties conducive to a wide range of industrial and refrigerant applications.
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