Air Pollution - uap-bd.edu
Transcript of Air Pollution - uap-bd.edu
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Air Pollution
• London smog: December 1952 – air in London become stagnant and cloud cover blocked incoming solar radiation.
In a week 4000 people died.
• Slash and burn
May 25, 2011
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Sulfurous Smog
Burning coal or oil in an urban area
May 25, 2011
Sulfur oxides (mostly sulfur dioxide)
+
Particulates
Concentrated Sulfurous smog
(gray air)
Releases
With stagnant with humidity, cloud cover
and formation of inversion layer
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Photochemical Smog
Nitrogen oxide
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Organic compounds
hydrocarbons
Concentrated
Photochemical smog
With stagnant with humidity, cloud cover
and formation of inversion layer
+
Sun
Solar radiation
in urban area
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General Effects of Air Pollution
• Visually aesthetic resources
• Vegetation
• Animals
• Soils
• Water quality
• Structures, and
• Human health
May 25, 2011
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Sources of Air Pollution
• Stationary sources: Point sources, Fugitive sources and area sources
• Mobile sources
May 25, 2011
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Air Pollutants
• Primary pollutants: Particulates, Sulfur dioxide, Carbon monoxide, Nitrogen dioxide and hydrocarbon
• Secondary pollutants: ozone
May 25, 2011