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7/30/2019 The Importance of Maintaining Clean Air.
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Definition of Air Pollution
Examples of Pollutants and Their Sources
The Effects of Air Pollution
Steps to Stop and Control Air Pollution
Ways to Keep Air Clean
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*Definition of Air Pollution
Introduction of chemicals, particulate matter, or biological
materials that cause harm or discomfort to humans or other
living organisms, or cause damage to the natural
environment or built environment. Indoor air pollution and urban air quality are listed as two of
the world's worst pollution problems in the 2008 Blacksmith
Institute World's Worst Polluted Places report.
Pollutants that are pumped into our atmosphere and directlypollute the air are called primary pollutants.
If primary pollutants undergo chemical reactions, the
resulting compounds are called secondary pollutants.
Example :Photochemical
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*Examples of Pollutants
and Their Sources
Carbon Monoxide:-Motor vehicle exhaust, indoor
sources include kerosene or wood burning stoves.
Sulfur Dioxide:-Coal-fired power plants, petroleumrefineries, manufacture of sulphuric acid and
smelting of ores containing sulphur.
Nitrogen Dioxide:-Motor vehicles, electric utilities,
and other industrial, commercial, and residential
sources that burn fuels.
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*The Effects of Air Pollution
Haze:-caused by the open burning of forests. Haze is caused when
sunlight encounters tiny pollution particles in the air. Haze
obscures the clarity, colour, texture, and form of what we see.
Acid-Rain:-these acids are formed primarily by nitrogen and sulphuroxides released into the atmosphere when fossil fuels are burned.
These acids fall to the Earth either as wet precipitation (rain,
snow, or fog) or dry precipitation (gas and particulates). Some are
carried by the wind. Acid rain damages trees ,causes soils and
water bodies to acidify, making the water unsuitable for some fishand other wildlife. It also speeds the decay of buildings.
Strokes:- due to thickening of the blood which does not respond to
blood thinners.
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*
Do not allow open burning in residential
areas.
Advise farmers to reduce the use of
pesticides.
Ban nuclear tests through aninternational agreement.
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*CONTROL.
Fix catalytic converters to the exhaust pipes
of motor vehicles so that harmful exhaustgases can be converted to harmless
substances.
Use unleaded petrol in motor vehicles.
The chimneys of factories must be tall in
size so that the emissions must be released
higher up in the environment.
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*Catalytic Converters
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*Ways to Keep Air Clean
*Join a carpool or vanpool to get to work or school.
*Conserve energy - turn off appliances and lights
when you leave the room.
*Buy rechargeable batteries for devices used
frequently.
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*THE ENDThank You