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particulate matter |
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particulate matter [pär′tik·yə·lət ‚mad·ər] (physics) matter in the form of small liquid or solid particles. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| Researchers and air quality regulators have long known that freeways are among the most toxic sources of pollution in the Southland -- and that particulate matter pollution can damage the lungs, brain and heart. Environmental Protection Agency (EPA) recently announced changes to the National Ambient Air Quality Standards (NAAQS) that address fine and coarse particulate matter (PM) limits for designating whether a state or regional entity is in compliance with the standards. Airborne particulate matter, nitrogen oxides, and carbon monoxide weren't associated with reduced sperm concentrations, the team says. |
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