Glossary
 

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Particulate matter

Similar term(s): PM

Definition:

Sum of all microscopic solid and liquid particles, of human and natural origin, that remain suspended in a medium such as air for some time. These particles vary greatly in size, composition, and origin, and may be harmful.

Particulate matter may be in the form of fly ash, soot, dust, fog, fumes etc.

Source: GreenFacts

 

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27-Jul-2007