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Gases drawn into smog particles stay there, UCI-led study reveals
Date:2/21/2012

y check in, and they don't check out. They cannot escape. The material does not readily evaporate and may live longer and grow faster in total mass than previously thought," Finlayson-Pitts said. "This is consistent with related studies showing that smog particles may be an extremely viscous tar."

Perraud noted that broader study needs to be done: "The next logical step is to straighten the models out. We need enough follow-up data to do so."

Sophisticated tools made it easier to pinpoint the exact characteristics of chemical compounds in air. The scientists used a 26-foot-long "aerosol flow tube" at the AirUCI unit and a one-of-a-kind, 900-pound instrument known as SPLAT (a single particle laser ablation time-of-flight mass spectrometer) at the Pacific Northwest National Laboratory.


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Contact: Janet Wilson
janethw@uci.edu
949-824-3969
University of California - Irvine
Source:Eurekalert

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