3. . AKASH RAJ .AMAL RAJ.K .DON JOSEPH .JOSE CLEMENT .RENJITH M.C .SABIN MON FRANCIS AIR POLLUTION SUBMITTED BY
Pollution is an undesirable change in physical,chemical or biological characterstics of air,land or water that harmfully affected the life or create potential health hazard of living organism.
Any substance causes pollution is called pollutant.
5. DIFFERENT TYPES OF POLLUTION
6. AIR POLLUTION
7. Air pollution is the degradation of air quality and natural atmospheric conditions .
8. RESULTS OF AIR POLLUTION
Air pollutants cause injury to all living organisms.
They reduce growth and yield of crops.
It cause premature death of plants
Affects respiratory system of human and of animals.
9. PRIMARY AIR POLLUTANTS
Carbon monoxide (CO)
Volatile Organic Carbon (VOC) or Hydrocarbon (HC)
Nitrogen oxide (NO2)
10. 1.Particulate matter It comprises of solid particles or liquid droplets small enough to remain suspended in air. Eg : smokes,dust,pesticides,pollen, fungal spores ,fibres,some metal like copper, iron etc. EFFECTS -Injurious to health -asthma,tuberculosis,bronchitis etc .
11. 2.Carbon monoxide (CO)
This poisonous gas is formed from partial combustion of fuels, steel industry, oil refiners,cigarettesmoke etc.
CO is very harmful to living organism especially to animals.
It inhibits cellular respiration in plants.
16. 3.Carbondixide (CO2)
Due to the combustion of fuels, respiration process of plants and animals etc.
The main reason for increasing global warming is due to the present of high amount of CO2.
17. 4. Volatile Organic Carbon (VOC) or Hydrocarbon (HC)
These are compounds of hydrogen and carbon.
Hydrocarbons are formed naturally during decomposition of organic matter and certain types of trees such as pine trees.
The chief source are the motor vehicle,burning of fuels,decay of garbage etc.
23. 5. Sulphur dioxide (SO2)
SO2 is released from the combustion of sulphur containing coal, petroleum refining, automobiles, ore smelters etc.
High amount of sulphur dioxide destroys the vegetation.
It disappearance of chlorophyll and break down of cells.
25. 6.Nitrogen oxide (NO2)
It form during combustion of fossil fuels as high temperatures in automobile engines.
It also released from power plants.
It may cause heart or lung problems and may be carcinogenic.
28. 7. Fluorides
Hydrogen fluoride gas is an extremely phytotoxic gas released by the heating of fluoride rocks, soils etc.
29. 8. Lead
Lead is emitted by automobile exhaust and it causes long-term environmental pollution.
Continuous inhaling of air borne lead pollution caused lead poisoning.
It reduces the oxygen carrying capacity of haemoglobin in the blood.
30. SECONDARY POLLUTANTS
31. 1.Photochemical smog
It is formed in traffic congested metropolitan cities where warm conditions and intense solar radiations are present.
It caused by combination of smoke and fog.
It cause series of health hazards.
Damage plant as well as animal life .
32. 2.Acid rain
As a result of burning of fossil fuels, and petroleum, large quantities of sulphur oxide and nitrogen oxides reach the atmosphere
These gases oxidise into sulphuric acid and nitric acid.
It deposits on the surface of earth either through rain.