How Can Air Pollution Cause Chemical Weathering?
Chemical weathering means the transformation or degradation of a chemical which usually happens when the chemical is released in the environment. In air weathering is due to a combination of processes which all result in the reduction of the pollutant concentration in air. Such processes are dispersion, deposition with precipitation water, as well as chemical reaction and photo-degradation of contaminants (degradation induced by UV light). All these processes, make the acute air effects of chemical pollution to be generally shirt term (except for indoor air).
