BSC CHEMISTRY Chapter Notes - Chapter chapter 4: Air Pollution, Non-Road Engine, Dry Lake
Document Summary
Air pollution is basically the presence of foreign substances in air in excessive concentration which adversely effect the wellbeing of the individual or damage to property. Wherever we live, the air is contaminated to some degree. The earliest pollutant noted in the atmosphere were of natural origin; like smoke, fumes, ash and gases from volcanoes and forest fires, or sand and dust from windstorms, or any other natural sources. But the problem of air pollution came on the sense when human induced or anthropogenic sources started emitting pollutant. A stationary source of air pollution refers to an emission source that does not move, also known as point source. Stationary source includes factories, power plants, dry cleansers and degreasing operations. The term area source is used to describe many small sources of air pollution located together whose individual emission may be below threshold of concern, but whole collective emission can be significant.
