Air and Water Pollution essay

4881 Words Apr 2nd, 2013 20 Pages
The chemical composition of the atmosphere today is so different as compared to the atmosphere that existed before the Industrial Revolution, 1760 – 1830. To define air pollution, we should first consider all those sources that release harmful chemicals into the atmosphere and alter its chemical composition. First of all, all anthropogenic (man-made) emissions are air pollutants. Next, is the natural emission which can be divided into biogenic and geogenic. Biogenic emissions result from the living world such as volatile organic compound emissions from forests and CH4 emissions from swamp. On the other hand, geogenic emissions are from the non-living world, such as volcanic emissions, sea-salt emissions, and
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-automobiles are the largest sources of VOCs for the reaction -concentrations tend to peak in the afternoon, causing eye irritation and aggravation of respiratory diseases
Lead (Pb) -Pb levels in the air has decreased considerably with gradual elimination of lead in gasoline worldwide -leaded gasoline combustion
-combustion of solid waste, coal and oils
-emissions from iron and steel production and lead smelters
-tobacco smoke -affect blood and kidney
-affect the nervous, immune, cardiovascular and reproductive systems

The above table was constructed based on the information obtained from :
Daly, A. and P. Zannetti. 2007. An
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