Chapter 15

Air Pollution
the contamination of the atmosphere by the introduction of pollutants from human and natural sources
Particulate Matter
The mix of both solid and liquid particles in the air
atmospheric moisture or dust or smoke that causes reduced visibility
Photochemical oxidant
A class of air pollutants formed as a result of sunlight acting on compounds such as nitrogen oxides
Ozone O3
A secondary pollutant made up of three oxygen atoms bound together.
air pollution by a mixture of smoke and fog
Photochemical smog (brown smog,Los Angeles)
Smog that is dominated by oxidants such as ozone.
Sulfurous smog (grey smog, industrial, London)
smog dominated by sulfur dioxide and sulfate compounds
Volatile organic compound (VOC)
An organic compound that evaporates at typical atmospheric temperatures
Primary pollutant
A pollutant that is put directly into the atmosphere by human or natural activity
Secondary pollutant
pollutant formed by the chemical reactions of other primary or secondary pollutants
Thermal inversion
The temperature inversion in which warm air traps cold air and pollutants near the earth.
MC risk factor for mesothelioma
Sick Building Syndrome
A buildup of toxic pollutants in an airtight space, seen in newer buildings
Clean air act
Set emission standards for cars, and limits for release of air pollutants