Particulate matter
Particulate matter (PM) or particulates are microscopic particles of solid or liquid matter suspended in the air. The combination of particulates and air is called an aerosol.
Particulate matter (PM) or particulates are microscopic particles of solid or liquid matter suspended in the air. The combination of particulates and air is called an aerosol.
Particulate matter (PM) or particulates are microscopic particles of solid or liquid matter suspended in the air. The combination of particulates and air is called an aerosol.
Source: Wikipedia "Particulate matter" · CC BY-SA 4.0
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