Aerosole
Liquid or solid particles hanging in the air are called aerosols. It consists of particles of one micron to ten microns in size.
Sources of Air Pollution / Causes of Air Pollution
| Source | Produced Air pollutant |
| Burning of fossil fuels, mineral oil, coal | carbon dioxide, carbon mono oxide |
| incomplete combustion fossil fuels. | Hydrocarbons |
| aerosol and refrigeration system. | Fluorocarbons |
| burning of fossil fuels containing sulfur | sulfur dioxide (SO2), sulfur trioxide (SO3), hydrogen sulfide (H2 S) and sulfuric acid (H2 SO4), etc. |
| aircraft, fuel combustion, and chemical fertilizers. etc. | nitrous oxide (N2O), nitric oxide (NO), nitrogen oxide (NO2), and nitrogen trioxide (NO3) |
| bleaching and other chemical processes of cotton textiles | Chlorine |
| dissociation by heating glycerol or oil. | Aldehydes |
| paddy fields and ruminant cattle from the air | Methane gas (CH4) |
| Forest fire | Carbon dioxide, Carbon monoxide, and ash particles, etc. |
| By Volcanic | hydrogen sulfide, sulfur dioxide, etc. |