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| Criteria Pollutants |
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| An
air pollutant for which acceptable levels of exposure can be determined
and for which an ambient air quality standard has been set. Examples
include: ozone, carbon monoxide, nitrogen dioxide, sulfur dioxide, and
PM10 and PM2.5. |
| |
| Air Toxics |
| Toxic air pollutants may cause or
contribute to an increase in deaths, or may pose a present or potential
hazard to human health. Health effects from toxics may occur at extremely
low levels, and it is typically difficult to identify levels of
exposure which do not produce adverse health effects. |
| |
| Speciation Profiles |
| Speciation
profiles provide
estimates of the chemical composition of criteria and toxic emissions,
and are used in the emission inventory and air quality modeling.
[Converts tons of PM or ROG into pounds of each individual toxic
pollutant emitted for that process.] |
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| Health Effects of Air Pollution |
| This factsheet shows the health
effects of some of the common pollutants found in our air and examples
of some of the sources of these pollutants. |
This page last reviewed July 17, 2008
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