Air contamination is a concern for ventilation engineers whenit causes problems for building occupants. Engineers need to understand thevocabulary used by the air sampling and building air cleaning industry. Thischapter focuses on the types and levels of air contaminants that might enterventilation systems or be found as indoor contaminants. Industrial contaminantsare included only for special cases. Because it is not a building air concern,the effects of refrigerants on the atmosphere are not included in this chapter;see Chapter 29 for discussion of this topic.

CLASSES OF AIR CONTAMINANTS
PARTICULATE CONTAMINANTS
Particulate Matter
GASEOUS CONTAMINANTS
Volatile Organic Compounds
Semivolatile Organic Compounds
Inorganic Gases
AIR CONTAMINANTS BY SOURCE
Outdoor Air Contaminants
Industrial Air Contaminants
Commercial, Institutional,and Residential Indoor Air Contaminants
Flammable Gases and Vapors
Combustible Dusts
Radioactive AirContaminants
Soil Gases

No. of Pages: 25