Air Contamination
The last major type of contamination is atmospheric, or air
contamination. This occurs in various ways and can be caused
by ground water contamination or soil contamination, as discussed
previously. Also, atmospheric contamination can occur when chemical
companies or other businesses release noxious fumes into the
air which then drift over to people's homes and are thus inhaled
by people in the area.
What kind of contamination is it?
Air pollution can be contaminants that exist as a gas mixed
with the air or that are attached to or make up particles suspended
in the air.
How did it get there?
Air pollution results when gases or particles containing hazardous
substances are released into the air. There are many sources
of air pollution including emissions from smokestacks and landfills,
explosions and fires, automobile exhaust, factory equipment leaks,
and commercial products such as paints or household cleaners.
Liquid hazardous substances can cause air pollution when they
are exposed to air and evaporate. Contaminants in surface soil
can contribute to air pollution if the soil becomes airborne
in the wind.
How does it hurt animals, plants and humans?
Air pollution can hurt animals and humans when they inhale contaminated
air. It can cause respiratory problems as well as other health
effects if contaminants are absorbed from the lungs into other
parts of the body. Certain air contaminants can hurt animals
and humans when they contact the skin. Plants rely on respiration
for their growth and can also be hurt by exposure to contaminants
in the air.
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