primary pollutant

in atmospheric chemistry
https://doi.org/10.1351/goldbook.P04838
A pollutant emitted directly into the air from identifiable sources (e.g. $\ce{SO2}$, $\ce{NO}$, hydrocarbons, etc.). Secondary pollutants, such as ozone, are generated within the atmosphere through chemical changes which occur in primary pollutants.
Source:
PAC, 1990, 62, 2167. (Glossary of atmospheric chemistry terms (Recommendations 1990)) on page 2208 [Terms] [Paper]
Citation: 'primary pollutant' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.P04838 RIS BibTex EndNote
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