This is the current revision of Particulate matter as edited by DavidB4-bot(talk | contribs) at 17:15, July 13, 2016. This URL is a permanent link to this version of this page.
Particulate matter is a complex mixture of extremely small particles and liquid droplets. It consists of a number of components, including acids (such as nitrates and sulfates), organic chemicals, metals, and soil or dust particles.