2. WHAT IS AIR POLLUTION?
- Air pollution is a mixture of solid particles and gases in the air. Car emissions, chemicals
from factories, dust, pollen and mold spores may be suspended as particles.
- Some air pollutants are poisonous. Inhaling them can increase the chance you'll have
health problems. People with heart or lung disease, older adults and children are at
greater risk from air pollution. Air pollution isn't just outside - the air inside buildings
can also be polluted and affect your health.
3. SOURCES OF OUTDOOR POLLUTIONS
Smog - is a type of large-scale outdoor pollution. It is caused by chemical reactions between
pollutants derived from different sources.
-Cities are often centers of these types of activities.
Acid rains
-It’s caused when a pollutant combines with droplets of water in the air.
-The effects of acid rain on the environment can be very serious.
4. Greenhouse effect
-It generally comes from the build up of carbon dioxide gas in the atmosphere. Carbon dioxide
is produced when fuels are burned.
-In this type of pollution sun rays go into the atmosphere and they are trapped by
greenhouse-gasses. So the temperature on the earth raise.
Hole in the ozone layer
-It is another result of pollution. Chemicals released by our activities affect the stratosphere.
-Releases of CFC from heating, aerosol cans, refrigerator equipment removes some of the
ozone, causing "holes”.
5. SOURCES OF INDOOR POLLUTION
• 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.
6. CAUSES
• Natural Sources
e.g. smoke that comes from
wildfires,
volcanoes, methane, dust
• Human Sources
e.g. power plants and
automobiles,
fumes, burning wood stoves,
fireplaces, and furnaces
9. PRIMARY MECHANISM
• Formation of VOC (Volatile Organic Compound)
• Biological generation of VOC
• Formation of liquid aerosol droplets
• Anthropomorphic generation of particulate aerosol
• Biological formation of particulate aerosols
• Particulate aerosol formation
10. VOC
• volatile organic compound, a term that refers to any carbon-containing chemical
that evaporates easily at room temperature. VOCs are generated from industrial and
household products as well as daily activities.
• are emitted from several building materials, such as paint and carpets. They are also
common in household and personal care products, such as air fresheners and
cosmetics. Activities that people perform on a regular basis, such as dry cleaning
and cooking with wood-burning stoves, also generate VOCs. Exposure to excessive
amounts of VOCs may produce short-term health effects such as nasal irritation and
long-term health effects such as cancer.
12. HEALTH EFFECTS
Some individuals are much more sensitive to pollutants than are others.
Air pollution can affect our health in many ways with both short-term and long-term effects.
• Human Effects
e.g. diseases
• Environmental Effects
Acid rain
Eutrophication
Haze
Wildlife
Ozone Depletion
Crop and forest damage
Global Climate Change
13. DISEASES CAUSED BY AIR POLLUTION
Outdoor & Indoor Pollution
• ischaemic heart disease
• stroke
• chronic obstructive pulmonary disease (COPD)
• lung cancer
• lower respiratory infections in children
15. MITIGATION Mitigatio
n of Air
Pollution
Sustainable
Development
International
Conventions
and Treaties
National and
International
funds, Eco-
Conversion
New
Technologies,
Recycling
Lower
Combustion
Lower
Transboundar
y Emissions
Lower
Emissions
16. PREVENTIONS
• Air pollution prevention efforts of companies have generally focused on
waste reduction, reuse and recycling.
• So to solve these problems and to get over them we can change our
lifestyles.
• If we do these simple things we could have a better world and we could live
in a better way.
