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WHO | Occupational health - WHO | World Health …
Hazard Prevention and Control in the Work Environment: Airborne Dust WHO/SDE/ Chapter 1 - Dust: Definitions and Concepts Airborne contaminants occur in the gaseous form (gases and vapours) or as aerosols. In scientific terminology, an aerosol is defined as a system of particles suspended in a gaseous medium, usually air in the context of Occupational hygiene, is usually air. Aerosols may exist in the form of airborne dusts, sprays, mists, smokes and fumes. In the Occupational setting, all these forms may be important because they relate to a wide range of Occupational diseases. Airborne dusts are of particular concern because they are well known to be associated with classical widespread Occupational lung diseases such as the pneumoconioses, as well as with systemic intoxications such as lead poisoning, especially at higher levels of exposure.
Although in occupational hygiene, the term "airborne dust" is used, in the related field of environmental hygiene, concerned with pollution of the general atmospheric environment, the term "suspended particulate matter" is often preferred. The aerodynamic behaviour of airborne particles is very important in all areas of
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