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(iii) Particulate matter suspended in air, scatters and partly absorbs light.
The various causes of air pollution are: (i) Combustion of natural gas, petroleum, coal and wood in industries, automobiles, aircrafts, railways, thermal plants, agricultural burning, kitchens, etc.
(soot, flyash, CO, CO, nitrogen oxides, sulphur oxides).
The different air pollutants and their effects are as follows: It is of two types—settleable and suspended.
The settleable dusts have a particle longer than 10 (am.
Due to excessive combustion activity, the content of C0 has been steadily rising.
Chemosynthesis Of Archaea - Cause And Effect On Pollution Essay
As carbon dioxide accumulates in the atmosphere it absorbs more and more of the reflected infrared radiation.
(ii) Metallurgical processing (mineral dust, fumes containing fluorides, sulphides and metallic pollutants like lead, chromium, nickel, beryllium, arsenic, vanadium, cadmium, zinc, mercury).
(iii) Chemical industries including pesticides, fertilizers, weedicides, fungicides. (v) Processing industries like cotton textiles, wheat flour mills, asbestos. Natural air pollutants include (a) pollen, spores, (b) marsh gas, (c) volcanic gases and (a) synthesis of harmful chemicals by electric storms and solar flares.
2, 1984) killed over 2500 and maimed several thousand persons. Other sources are jet plane emissions which contain chlorofluorocarbons.
Chlorofluorocarbons are also used in refrigeration and formation of certain types of solid plastic foams.