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102Chapter16 - Chapter 16 Air Pollution 16.2 Natural...

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Chapter 16: Air Pollution
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16.2 Natural Sources Of Air Pollution Natural Combustion Decay Biological Emissions Chemical Particulate (spores, pollen, etc.) Wind-blown dust Volcanic
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16.3 Human-caused Air Pollution We categorize pollutants according to their source We also categorize pollutants according to their content Unconventional pollutants also are important Indoor air is more dangerous for most of us than outdoor air
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Classification of Pollutants By Source Primary: Direct emission Secondary: Modified by environment (smog) Fugitive: Non-point source (dust)
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Classification of Pollutants By Content Sulfur emissions Nitrogen Compounds Carbon: CO2 and CO Particulate Matter Metals (Hg, Cd) and Halogens (Cl, F, Br) Volatile Organics (gasoline, pesticides)
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16.4 Climate, Topography, And Atmospheric Processes Temperature inversions trap pollutants Cities create dust domes and heat islands Wind currents carry pollutants
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