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Berkeley Lab researchers participate in Homeland Security study of subway airflow
Date:12/10/2009

luoride and perfluoro-carbon); an inert particle tracer tagged with a biologically inert, non-toxic organic dye used in medical imaging applications; and, a common chemical often used as a brightening agent in laundry detergents and paper manufacturing. Particle and gas concentrations are being sampled in more than 20 stations and in subway cars, but normal MBTA operations are not being disrupted by the activities of the researchers.

Joining Berkeley Lab in this effort are scientists from Argonne National Laboratory, ICx Technologies of Arlington, Virginia, the Defence Science and Technology Laboratory of the United Kingdom, and the Chemistry Centre of Australia.

"The Argonne team, under David Brown, has created a computational model for predicting the behavior of airborne contaminants in subway systems," says Lunden. "We will now have actual subway data measurements that can be compared to the model's predictions and used to refine it."

Because air temperature is a driver of airflow, Lunden and her colleagues will return to Boston in the summer of 2010 to conduct further measurements. Berkeley Lab EETD researchers were part of a similar study conducted in 2007 and 2008 by DHS of the "Metro" subway system that serves the Washington, D.C. metropolitan area.


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Contact: Lynn Yarris
lcyarris@lbl.gov
510-486-5375
DOE/Lawrence Berkeley National Laboratory
Source:Eurekalert  

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