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Particle and gas phase interactions in air sampling.
Air sampling instruments for evaluation of atmospheric contaminants, 9th edition. Cohen BS, McCammon CS Jr., eds. Cincinnati, OH: American Conference of Governmental Industrial Hygienists (ACGIH), 2001 May; :77-92
An aerosol consists of airborne particles and sorrounding gases. The particle phase may include solids and liquids. The gas phase normally includes air and water vapor and may include vapors of organic and inorganic compounds as well as contaminant gases, such as sulfur dioxide. The distinction between a vapor and a gas is somewhat arbitrary. Following common practice, the term "vapor" refers to the gas phase portion of a material and atmospheric pressure. A "gas" cannot exist as a liquid or solid at normal conditions.
Gas-sampling; Air-sampling; Aerosols; Airborne-particles; Gases; Vapors; Organic-compounds
Air sampling instruments for evaluation of atmospheric contaminants, 9th edition
Page last reviewed: April 12, 2019
Content source: National Institute for Occupational Safety and Health Education and Information Division