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People Near Freeways Are Exposed To 30 Times The Concentration Of Dangerous Particles

Date:
October 21, 2002
Source:
University Of California - Los Angeles
Summary:
People who live, work or travel within 165 feet downwind of a major freeway or busy intersection are exposed to potentially hazardous particle concentrations up to 30 times greater than normal background concentrations found at a greater distance, according to two recently published UCLA studies.

People who live, work or travel within 165 feet downwind of a major freeway or busy intersection are exposed to potentially hazardous particle concentrations up to 30 times greater than normal background concentrations found at a greater distance, according to two recently published UCLA studies. The studies -- published in the Journal of the Air and Waste Management Association and in Atmospheric Environment -- show that proximity to a major freeway or highway dramatically increases exposure to "ultrafine" particles (tiny particles less than 0.1 micrometers in diameter), which are linked to neurological changes, mild pulmonary inflammation and cardiovascular problems. The U.S. Environmental Protection Agency (EPA) currently regulates particles less than 2.5 micrometers in diameter, and ultrafines represent the very smallest particles inhaled by the public.


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The above story is based on materials provided by University Of California - Los Angeles. Note: Materials may be edited for content and length.


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University Of California - Los Angeles. "People Near Freeways Are Exposed To 30 Times The Concentration Of Dangerous Particles." ScienceDaily. ScienceDaily, 21 October 2002. <www.sciencedaily.com/releases/2002/10/021021052522.htm>.
University Of California - Los Angeles. (2002, October 21). People Near Freeways Are Exposed To 30 Times The Concentration Of Dangerous Particles. ScienceDaily. Retrieved April 21, 2014 from www.sciencedaily.com/releases/2002/10/021021052522.htm
University Of California - Los Angeles. "People Near Freeways Are Exposed To 30 Times The Concentration Of Dangerous Particles." ScienceDaily. www.sciencedaily.com/releases/2002/10/021021052522.htm (accessed April 21, 2014).

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