Definition: Any substance in the air which could, if present in high enough concentration, harm humans, animals, vegetation or material. Substances include GASES; PARTICULATE MATTER; and volatile ORGANIC CHEMICALS.
Other names Pollutants, Environmental Air; Pollutants, Air Environmental; Pollutants, Air; Air Environmental Pollutants; Environmental Pollutants, Air; Air Pollutants, Environmental; Environmental Air Pollutants