All about air pollution

1. AIR POLLUTION

2. • Air pollution is the a condition
in which the quality of air is
degraded due to the presence
of harmful substances
particulate matter, and
biologically agents

3. • It’s more dangerous than
the outdoor pollution,
because we do everything in
enclosed environments
where air circulation may be
restricted.
• There are many sources of
indoor air pollution: tabacco
smoke, cooking and heating
appliances, and vapors from
building materials.

4. Outdoor air pollution
• Outdoor air pollution is pollution outside a
house, buildings etc . There are many sources
of air pollution like cars, factories etc.

5. POINT SOURCES
• THOSE WHICH ARE READILY IDENTIFIED AND
ARE STATIONARY SUCH AS FACTORY
SMOKESTACKS. THEY DIRECTLY EMMIT TO THE
ATMOSPHERE GASES WHICH CONTRIBUTE TO
THE POOR QUALITY OF AIR

7. NONPOINT SOURCES
• THOSE WHICH ARE NOT EASILY IDENTIFIED AS
THEY ARE DIFFUSED AND MAY NOT BE
CONSTANTLY EMITTING POLLUTANTS.
EXAMPLES OF THESE ARE URBAN RUNOFF
WHICH INCLUDES VOLATILE AND HAZARDOUS
SUBSTANCES, AND MOBILE SOURCES SUCH AS
CARS.

9. THERMAL INVERSION
• IF THE FACTORY IS SOROUNDED BY
MOUNTAINS , OR EVEN BY TALL BUILDINGS,
THEN THE SMOKE IT RELEASES COULD NOT
DIFFUSE OR DISPERSE FAST. COLL AIR IS NOT
ABLE TO RISE BECAUSE IT IS TRAPPED BY
WARM AIR. IT SETTLES IN THE PLACE AND
HOLDS MORE POLLUTANTS FROM INDUSTRIES
AND OTHER SOURCEES.

11. THE EXTENT AND DEGREE OF AIR POLLUTION IN
AN AREA DEPENDS ON SEVERAL FACTORS:
• SOURCE OF POLLUTION
• RATE OF EMISSION
• WIND
• TOPOGRAGHY / LOCATION

12. SOURCE OF POLLUTION
• IF THE SOURCES OF AIR POLLUTION ARE
MANY THE DEGREE OF AIR POLLUTION IS
ALSO HIGH

13. RATE OF EMISSION
• THIS IS THE TOTAL AMOUNT OF EMITTED
GASSES BY POINT AND NONPOINT SOURCES.
IF THIS IS HIGH THE DEGREE OF AIR
POLLUTION IS ALSO HIGH

14. WIND
• WIND DILUTES AIR POLLUTANTS AS ITS
DISPERSE THEM. THE STRONGER THE
DISPERSAL BY WIND, THE LOWER IS THE AIR
POLLUTION

15. TOPOGRAPHY / LOCATION
• IF THE AREA IS SORROUNDED BY MOUNTAINS
OR TALL BUILDINGS, THE DEGREE OF AIR
POLLUTION IS HIGH BEAUSE OF THERMAL
INVERSION

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