1. Environmental Science 5e
Chapter 23
Air Pollution
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Environmental Science 5e

2. Stationary and Mobile Sources of Air Pollution
Two Sources of Air Pollution
1. Stationary Sources: have a relatively fixed location
Point Sources
Fugitive Sources
Area Sources
2. Mobile Sources: move from place to place while emitting pollutants
Ex) Airplanes
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Environmental Science 5e

3. General Effects of Air Pollution
Visual quality of the environment
Vegetation, Animals, Soil
Water Quality
Natural and Artificial Structures
Human Heath
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Environmental Science 5e

4. Environmental Science 5e
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Environmental Science 5e

5. Environmental Science 5e
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Environmental Science 5e

6. Primary and Secondary Pollutants, Natural and Human
Primary Pollutants
Those emitted directly into the air
Hydrocarbons, particulates, etc.
Secondary Pollutants
Produced through reactions between primary pollutants and normal atmospheric compounds
Ozone
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Environmental Science 5e

7. Environmental Science 5e
Major Air Pollutants
Sulfur Dioxide (acid rain)
Nitrogen Oxide
Carbon Monoxide
Ozone and Other Photochemical Oxidants
Volatile Organic Compounds
Particulate Matter
Hydrogen Sulfide
Hydrogen Fluoride
Hazardous Gases
Lead
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Environmental Science 5e

8. Environmental Science 5e
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Environmental Science 5e

9. Environmental Science 5e
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Environmental Science 5e

10. Environmental Science 5e
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Environmental Science 5e

11. Environmental Science 5e
Urban Air Pollution
Potential for Air Pollution Determined by:
Rate of emission
Downwind distance
Average wind speed
Elevation
Atmospheric Inversion:
Occurs when warmer air is found above cooler air and it poses a particular problem when there is a stagnant air mass
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Environmental Science 5e

12. Environmental Science 5e
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Environmental Science 5e

13. Environmental Science 5e
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Environmental Science 5e

14. Environmental Science 5e
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Environmental Science 5e

15. Environmental Science 5e
Smog
Smog
A mixture between smoke and fog that produces unhealthy urban air
Two Types
Photochemical Smog
Sulfurous Smog
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Environmental Science 5e

16. Environmental Science 5e
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Environmental Science 5e

17. Environmental Science 5e
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Environmental Science 5e

18. Environmental Science 5e
Pollution Control
Particulates
Automobiles
Sulfur Dioxide
Coal Gasification: converts coal to gas to remove sulfur
Scrubbing: gas desulfurization
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Environmental Science 5e

19. Environmental Science 5e
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Environmental Science 5e

20. Air Pollution: Legislation and Standards
Clean Air Act Amendments of 1990
Comprehensive regulations enacted by U.S congress that address acid rain, toxic emissions, ozone depletion and automobile exhaust
Air Quality Standards
Attempt to control air pollution
Tougher Standards for PM 2.5 and Ozone
Air Quality Index
Botkin and Keller
Environmental Science 5e