Friedlander, Sheldon K. Department of Chemical Engineering, University of California, Los Angeles, California.
Last reviewed:October 2019
- Role in science and technology
- Chemical composition
- Transport and deposition
- Deposition from flowing gases
- Aerosol dynamics
- Measurement methods
- Related Primary Literature
- Additional Reading
A suspension of small particles in a gas. The particles may be solid or liquid or a mixture of both. Aerosols are formed by the conversion of gases to particles, the disintegration of liquids or solids, or the resuspension of powdered material. Aerosol formation from a gas results in much finer particles than disintegration processes (except when condensation takes place directly on existing large particles). Dust, smoke, fume, haze, and mist are common terms for aerosols. Dust usually refers to solid particles produced by disintegration, while smoke and fume particles are generally smaller and formed from the gas phase. Mists are composed of liquid droplets. These special terms are helpful but are difficult to define exactly.
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