Air pollutants, including carbon monoxide, hydrocarbons, lead, oxidants, particulates, nitrogen oxides, and sulfur oxides, for which maximum permissible concentrations in ambient air are established.
A list of air pollutants identified in the 1970 Clean Air Act Amendments deemed to be critical in controlling air pollution and for which National Ambient Air Quality Standards (NAAQS) were established. Criteria pollutants include: sulfur dioxide (SO2), nitrogen dioxide (NO2), Volatile Organic Compounds (VOCs), particulate matter, carbon monoxide (CO), and lead (Pb).
Pollutants for which an air quality standard has been established. The most common criteria pollutants are Particulates, Carbon Monoxide (CO), Ozone (O3), Nitrogen Dioxide (NO2), Lead (Pb) and Hydrogen Sulfide (H2S). The health effects of these pollutants are addressed in the Glossary.
See conventional pollutants.
EPA has identified and set standards for six pollutants in order to protect human health and welfare, as mandated by the 1970 amendments to the Clean Air Act. The six pollutants are: ozone, carbon monoxide, total suspended particulates, sulfur dioxide, lead and nitrogen oxide. The term "criteria pollutants" is derived from the requirements that EPA must describe the characteristics and potential health and welfare effects of the pollutants. The standards are based on these criteria.
In Australia six criteria pollutants have been identified: carbon monoxide, lead, nitrogen dioxide, photochemical oxidants (measured as ozone), particles as PM10 (particles of 10 micrometres or less) and sulfur dioxide. The criteria air pollutants require special focus due to their abundance in the environment and their demonstrated adverse health effects.
air pollutants traditionally regarded as important in urban air - sulfur dioxide, carbon monoxide, nitrogen dioxide, ozone, particulate matter and lead (particulate and vapours)
The group of common air pollutants defined by EPA whose concentrations in the ambient air must be maintained at low levels to protect public health. EPA has promulgated a National Ambient Air Quality Standard (NAAQS) for each of the criteria pollutants.
A group of very common air pollutants regulated by EPA on the basis of criteria (information on health and/or environmental effects of pollution). Criteria air pollutants are widely distributed all over the country. The criteria pollutants are ozone, carbon monoxide, nitrogen dioxide, particulate matter, lead, and sulfur dioxide.
Air pollutants for which EPA has established an ambient air quality standard: carbon monoxide, lead, nitrogen oxides, ozone, particulates and sulfur oxides
The 1970 amendments to the Clean Air Act required EPA to set National Ambient Air Quality Standards for certain pollutants known to be hazardous to human health. EPA has set standards to protect human health and welfare for six pollutants: ozone, carbon monoxide, total suspended particulates, sulfur dioxide, lead, and nitrogen oxides. The term "criteria pollutants" derives from the requirement that EPA must describe the criteria-characteristics and potential health and welfare effects of these pollutants-for setting or revising standards.
Emissions which are subject to National Ambient Air Quality standards (NAAQS). They are: lead (Pb); oxides of nitrogen (NOx); sulfur dioxide (SO2); ozone; carbon monoxide (CO); and small particulates (PM-10).
Pollutants deemed most harmful to public health and welfare and that can be monitored effectively. They include carbon monoxide (CO), lead (Pb), nitrogen oxides (Nox), sulfur dioxide (SO2), ozone (O3), particulate matter (PM) of aerodynamic diameter less than or equal to 10 micrometers (PM10) and particulate matter of aerodynamic diameter less than or equal to 2.5 micrometers (PM2.5).
These are man-made pollutants such as carbon monoxide, nitrogen oxides, nonmethane volatile organic compounds (NMVOCs), and sulfur dioxide, that have indirect effects on global warming. They are primarily emitted as byproducts of fossil fuel and biomass combustion. Lead and particulates are also criteria pollutants. Although these pollutants only remain in the atmosphere for a short time, the chemical reactions that remove carbon monoxide, NMVOCs, and nitrogen oxides from the atmosphere promote the formation of ozone, which is harmful to people and animals at ground level.
As specified under the Clean Water Act, conventional contaminants include suspended solids, coliform bacteria, biochemical oxygen demand, pH, and oil and grease. (See: non-criteria pollutants.)
as defined by the EPA, six air pollutants that are the most widespread and harmful. They are: particulate matter, sulfur dioxide, carbon monoxide, nitrogen oxides, and lead.
Air pollutants for which the EPA has established State and National Ambient Air Quality Standards. These include particulate matter (PM10), nitrogen oxides (NOx), sulfur dioxide (SO2), carbon monoxide (CO), and volatile organic compounds (VOC).
Pollutants that can injure health, harm the environment, and cause property damage. In 1997, the criteria pollutants in the United States were Carbon monoxide (CO) Lead (Pb) Nitrogen dioxide (NO2) Ozone (O3) Particulate matter with aerodynamic size less than or equal to 10 μm ( PM-10) Sulfur dioxide (SO2). Regulations govern the concentrations of criteria pollutants at receptors located in various locations within the community. Compare air pollutants.
