particulate matter

Particulates, alternatively referred to as particulate matter (PM), aerosols or fine particles, are tiny particles of solid or liquid suspended in a gas. They range in size from less than 10 nanometres to more than 100 micrometres in diameter. The notation PM10 is used to describe particles of 10 micrometres or less and PM2.5 represents particles less than 2.5 micrometres in aerodynamic diameter; other numeric values may also be used. This range of sizes represent scales from a gathering of a few molecules to the size where the particles no longer can be carried by the gas. Sources of particulate matter can be anthropogenic or natural.
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Noun
1. a small discrete mass of solid or liquid matter that remains individually dispersed in gas or liquid emissions (usually considered to be an atmospheric pollutant)
(synonym) particulate
(hypernym) material, stuff
(hyponym) dust

Solid particles or liquid droplets suspended or carried in the air (e.g., soot, dust, fumes, mist). See aerosol, sulfate aerosols.

B: (Kimia) materi kepartikelan; materi partikulat
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