discuss the sources and affects of various air pollutants..........
Answers
Causes of Air pollution
1. Burning of Fossil Fuels: Sulfur dioxide emitted from the combustion of fossil fuels like coal, petroleum and other factory combustibles is one the major cause of air pollution. Pollution emitting from vehicles including trucks, jeeps, cars, trains, airplanes cause immense amount of pollution. We rely on them to fulfill our daily basic needs of transportation. But, there overuse is killing our environment as dangerous gases are polluting the environment. Carbon Monooxide caused by improper or incomplete combustion and generally emitted from vehicles is another major pollutant along with Nitrogen Oxides, that is produced from both natural and man made processes.
2. Agricultural activities: Ammonia is a very common by product from agriculture related activities and is one of the most hazardous gases in the atmosphere. Use of insecticides, pesticides and fertilizers in agricultural activities has grown quite a lot. They emit harmful chemicals into the air and can also cause water pollution.
3. Exhaust from factories and industries: Manufacturing industries release large amount of carbon monoxide, hydrocarbons, organic compounds, and chemicals into the air thereby depleting the quality of air. Manufacturing industries can be found at every corner of the earth and there is no area that has not been affected by it. Petroleum refineries also release hydrocarbons and various other chemicals that pollute the air and also cause land pollution.
The different types of air pollutants are as follows
1) dust particles
2) aerosols
3) soot
4) fly ash
Also some gases contribute to air pollution
1) methane - it is produced in swamps and marshes . If inhaled in excess causes serious health issues
2) sulphur dioxide - obtained from volcanic emissions , automobile exhaust and chimneys factories . It mixes with the water vapor in the atmosphere and falls down as acid rain which is very dangerous .
3) Nitrogenous compounds - automobile exhausts
Poses serious danger f inhaled in excess