The word "particulate" refers to tiny solid or liquid particles suspended in a substance, like air or water. These particles are so small that they can be inhaled or easily mix in other substances. Full definition
WHO recommends a maximum level of particulate matter of 20 micrograms per cubic metre, yet major cities such as Cairo, Delhi and Beijing are on average far beyond this limit. (chimalaya.org)
The ecoFLEX Corsa is equipped with a standard Diesel Particulate Filter which dramatically reduces the emissions. (topspeed.com)
The research also describes other chemicals in wildfire smoke, some never before measured, and it raises the estimated annual emission of particulate matter in the western United States significantly. (sciencedaily.com)