Date post: | 12-Apr-2017 |
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Environment |
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SOURCES OF AIR POLLUTION
Presented by-Darakhshan Nigar
POLLUTIONIntroduction or presence of harmful or
poisonous substances in the natural environment is called Pollution.
COMPOSITION OF AIR
It is defined as the presence of certain substances in air in such concentration that they produce undesirable effects on humans and environment.
AIR POLLUTION
SOURCES OF AIR POLLUTION
MAN-MADE NATURAL
MAN-MADE SOURCES
STATIONARY SOURCES
MOBILE SOURCES
CONTROLLED BURN
FUMES
WASTE DEPOSITION
MILITARY RESOURCES
NATURAL SOURCES
FOREST FIRE
VOLCANIC ERUPTION
DUST STORM
AIR POLLUTANTSAny solid, liquid or gaseous substance present in the air that can have adverse effects on humans and ecosystem.
CARBON MONOXIDE
• Motor vehicles• Some industrial processes• Combustion of fuels
SULPHUR DIOXIDE
• Heat and power generation facilities• Sulphuric acid plants• Burning of fossil fuels
NITROGEN OXIDES
• Motor vehicles• Heat and power generation• Explosives• Fertilizer plants
PARTICULATE MATTER
• Motor vehicle exhaust• Industrial processes• Heat and power generation• Volcanoes• Forest fires
LEAD
• Motor vehicle exhaust• Battery plants• Lead smelters
GROUND LEVEL OZONE
• Combustion of fossil fuels• Reaction of nitrogen oxides
CONCLUSION
According to the 2014 WHO report, air pollution in 2012 caused the deaths of around 7 million people worldwide. It may cause diseases, allergies or death in humans; it may also cause harm to other living organisms such as animals and food crops, and may damage the natural or built environment.Thus as far as possible these sources can be checked and prevent pollution.