Ppt about air pollutants

1. Air Pollution

2. Content
 What is it?
 How is it measured?
 The measured pollutants
 SMOG
 Its effects.....
 What can you Do
 Conclusion
 References

4. What is Atmosphere
 Atmosphere is the life blanket of Earth.
 It is therefore essential that we know more about the atmosphere
and the ways in which it is Polluted.

5. •Any visible or invisible particle or gas
found in the air that is not part of the
original, normal composition.

6. Natural:forest fires, pollen, dust
storm
Unnatural: man-made; coal, wood
and other fuels used in cars, homes,
and factories for energy

7. Air Pollution
 Air Pollution can impact your
 Health
Environment
 Nation’s Economy

8. Sources of air pollution
• Answer:the car
,bus,motorbike and lorry
.
• They cause air pollution because they have
an engine which burns fuel.

9. Sources of air pollution
• Sources of air pollution are either:
Natural:caused by nature.
Man-made:caused by human activity
.
• Below are some other sources of air
pollution.Which are natural,and which are
man-made?
Burning
fuel at
home
Industry Power stations
Wildfire Volcanoes

10. Causes of Air Pollution
 Major sources of Air Pollution
- Industries
-Automobiles and Domestic fuels
-High Proportion of undesirable
 gases, such as sulphur dioxide and carbon
monoxide

11. CAUSES OF AIR POLLUTION
 Carbon dioxide-this happens because of
Deforestation and fossil fuel burning.
 Sulfur dioxide –Due to the burning of sulfur
containing compounds of fossil fuels.
 Sulfur oxides- very dangerous to humans at a
high concentration. Sulfur in the atmosphere
is responsible for acid rain.

12. CONSEQUENCES OF AIR POLLUTION
 CO2 is a good transmitter of sunlight, but it also
partially restricts infrared radiation going back
from the earth into space, which produces the so-
called greenhouse effect that prevents a drastic
cooling of the Earth during the night.
 CO2 in atmosphere --> GLOBAL WARMING

13. Effects of Air Pollution
Human health
Animals
Plants
The atmosphere as a whole

15. How to Avoid Air Pollution
 Use natural Gases, like lpg autos
 Do not Burst Crackers
 Use less Amount of Fuel for Vehicles
 Use electric stoves

17. How You Can Help Reduce Air
Pollution?
 Conserve Energy
 Drive Wisely / Ride Wisely

19. AQI: Air Quality Index
•Indicates whether pollutant levels in air may cause
health concerns.
•Ranges from 0 (least concern) to 500 (greatest
concern)

22. Air Quality Air Quality Index Protect Your Health
Good 0-50 No health impacts are expected when air
quality is in this range.
Moderate 51-100 Unusually sensitive people should
consider limiting prolonged outdoor
exertion.
Unhealthy for Sensitive
Groups
101-150 Active children and adults, and people
with respiratory disease, such as asthma,
should limit prolonged outdoor exertion.
Unhealthy 151-200
Active children and adults, and people
with respiratory disease, such as asthma,
should limit prolonged outdoor exertion,
everyone else, especially children should
limit prolonged outdoor excertion.
Very Unhealthy (Alert) 201-300 Active children and adults, and people
with respiratory disease, such as asthma,
should limit prolonged outdoor exertion
everyone else, especially children, should
limit outdoor exertion.

23.  Efficient insulation
 Bacteria
 Molds and mildews
 Viruses
 animal dander and cat saliva
 plants
 house dust
 Mites
 Cockroaches
 pollen

31. Carbon Monoxide
•Colorless, odorless
•Produced when carbon does not burn
in fossil fuels
•Present in car exhaust
•Deprives body of O2 causing
headaches, fatigue, and impaired
vision

32. Sulfur Dioxide
•Produced when coal and fuel oil
are burned
•Present in power plant exhaust
•Narrows the airway, causing
wheezing and shortness of
breath, especially in those with
asthma

33. Nitrogen Dioxide
•Reddish, brown gas
•Produced when nitric oxide
combines with oxygen in
the atmosphere
•Present in car exhaust and
power plants
•Affects lungs and causes
wheezing; increases chance
of respiratory infection

34. Particulate Matter
•Particles of different sizes and
structures that are released into the
atmosphere
•Present in many sources including
fossil fuels, dust, smoke, fog, etc.
•Can build up in respiratory system
•Aggravates heart and lung disease;
increases risk of respiratory infection

35. Ground Level Ozone
•At upper level, ozone shields Earth from
sun’s harmful UV rays
•At ground level, ozone is harmful
pollutants
•Formed from car, power and chemical
plant exhaust
•Irritate respiratory system and asthma;
reduces lung function by inflaming and
damaging lining of lungs

38. •Combination of gases with water vapor
and dust
•Combination of words smoke and fog
•Forms when heat and sunlight react
gases (photochemical smog)
•Occurs often with heavy traffic,
high temperatures, and calm winds

40. •1st smog related deaths were in London
in 1873; death toll 500 people; can you
imagine how much worse the atmosphere
is now?!
•Limits visibility
•Decreases UV radiation
•Yellow/black color over cities
•Causes respiratory problems and
bronchial related deaths

47. •Ride your bike
•Tell your friends and family about pollution
•Make sure your parents get pollution checks
on their cars
•Ride the school bus

48. •Learn more; stay up to date
•Join a group to stop pollution
•Encourage your parents to carpool to
work
•Switch off lights, fan, heat, etc. when
you leave the room

50. CONCLUSION
 Air pollution has long been a serious problem in the
world.
 Without air, Earth would be unable to sustain life.
 Spread the Word.

51. Reference
 www.google.com
 www.wikipedia.com
 www.studymafia.org

52. Thanks