criteria air pollutant

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criteria air pollutant

Also known as: criteria pollutant

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air pollution

In air pollution: Criteria pollutants
Environmental Protection Agency (EPA) as “criteria” pollutants—criteria meaning that the concentrations of these pollutants in the atmosphere are useful as indicators of overall air quality. The sources, acceptable concentrations, and effects of the criteria pollutants are summarized in the table.
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National Ambient Air Quality Standards

In National Ambient Air Quality Standards
…six principal pollutants known as criteria pollutants. These are carbon monoxide, lead, nitrogen dioxide, particulate matter (airborne suspensions of extremely small solid or liquid particles), sulfur dioxide, and ground-level ozone (ozone is not directly emitted into the air but is formed by sunlight acting on emissions of
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