WELCOME. TO. MY PROJECT BY MOHD.NASEERUDDIN G.B.H.S MEDAK. AIR POLLUTION. Presented by MOHD.NASEERUDDIN S.A BIO-SCIENCE G.B.H.S MEDAK. ENVIRONMENT.
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the protective thick gaseous layers surrounding the earth
It deals with water which includes sea, rivers, oceans,
The solid components of the earth which includes soil,
rocks, and other nonliving things.
It deals with living things present in atmosphere and
1. Air Pollution
2. Water pollution
3. Soil pollution
4. Sound pollution
N2 = 78.84%
O2 = 20.94%
CO2 = 0.03%
Ar.& others= 1%
Air pollution is most important from public point of view, because every individual person breathes approximately 22000 times a day inhaling about 15 to 22 kgs of air daily.
The polluted air causes ill effects.
1. primary pollutants
The substances which are produced at the source it self and enters into the atmosphere directly.
co2, co, NOx, sox
2. Secondary pollutants.
The primary pollutants undergo chemical reaction in presence of sun light and produce a new toxic substances are called secondary pollutants
PAN,PBN and any photochemical smog.
CO, CO2, NOx, SOx, CFC’s, HF,
Hydrocarbons and all other vapours.
mist, fog ,fumes & gases and smog
It combines with haemoglobin and forms
carboxyhaemoglobin which leads to death.
headache, nausea, hard breathing, cardiovascular disorders and lung cancer.
It leads to rise in global warming. due to which the icebergs melt ,water levels increases in oceans and submerge cities Islands may disappear
2.Rate of photosynthesis
3.Causes skin diseases
Ozone is mainly broken down by chemicals called Chlorofluorocarbons and also by nitrogen oxides. CFC's ironically were first used in large quantities because they were thought to be safe and inert (unreactive) chemicals. They are a group of chemically similar gases used in refrigeration systems, air conditioners, aerosols, solvents and in the production of some types of packaging. Nitrogen oxides are a by-product of fuel burning, e.g. aircraft exhausts.
CFC's don't occur naturally, they are man-made chemicals. They are very useful when they are where they are supposed to be, and doing what they are supposed to be doing. But once released into the atmosphere they are a serious pollutants.
The actual reactions that destroy ozone are very complicated. They take place on the surface of the ice particles of the Polar Stratospheric Clouds and it takes only a small amount of CFC to destroy an awful lot of ozone.
Depletion of ozone layer
Air pollution can be controlled by