Any finely divided airborne solid or liquid material with a diameter smaller than 100 micrometers while it is in the air. Examples of particulate matter include dust, smoke, soot, pollen and soil particles.
PARTICULATE MATTER
Any finely divided airborne solid or liquid material with a diameter smaller than 100 micrometers while it is in the air. Examples of particulate matter include dust, smoke, soot, pollen and soil particles.
