pol·lu·tant
/pəˈlo͞otnt/
noun
a substance that pollutes something, especially water or the atmosphere.
"chemical pollutants"
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Pollutant
A pollutant or novel entity is a substance or energy introduced into the environment that has undesired effects, or adversely affects the usefulness of a resource. These can be both naturally forming or anthropogenic in origin. Wikipedia
Jun 8, 2016 · The six criteria pollutants addressed in the NAAQS are Carbon Monoxide, Nitrogen Dioxide, Lead, Ozone (or smog), Particulate Matter, and Sulfur ...
May 16, 2024 — Perfluoroalkyl and polyfluoroalkyl substances, also known as PFAS or 'forever chemicals,' have become persistent pollutants in the air, water and ...
May 29, 2024 · a substance that pollutes: Sulfur dioxide is one of several pollutants that are released into the atmosphere by coal-fired power stations.