A Study of Atmospheric Processes Affecting Human Exposures to Fine Particulate Matter

Speaker(s): 
Date: 
January 23, 2002 - 12:00pm
Location: 
Bldg. 90

Growing evidence links exposure of particulate matter smaller than 2.5 micro-meters (PM2.5) to significant adverse health effects.  Design of effective control strategies, however, awaits improved scientific understanding of the routes of exposure and mechanisms of injury.  Although most PM2.5 sources originate in outdoor air, exposure studies find that personal PM2.5 exposures are more tightly correlated with concentrations indoors than outdoors.  Here, we describe a project to develop a semi-mechanistic model that captures the relevant physio-chemical processes affecting indoor PM2.5 concentrations of outdoor origin.   A discussion of experimental work underpinning the model focuses on development of instrumentation for and measurements conducted at a house in San Joaquin Valley, CA.  Results from this work show that indoor concentrations of PM2.5 were significantly lower that outdoor concentrations, in large part, because volatile particulate species vaporized upon entry into the building.  Initial results from the application of a size dependent model of transient non-volatile particles confirms the need for additional particle loss mechanisms.  By incorporating additional physio-chemical processes and the effects of building occupancy into the model we expect to produce a testable probabilistic model that may eventually be used to help design PM2.5 control strategies for regional housing stocks.

Add event to Google Calendar

Announcement List

To be added to our seminar annoucement list please, email ETA Seminars. Seminars may change without notice, stay informed by joining our seminar email list. 

Site Access

For site access please email your request to ETA Seminars. To arrive at Building 90 via the LBNL shuttle, take "Blue Uphill". Click here for the shuttle schedule. To ensure your site access is set-up send your request 36 hours in advance of the seminar.

Remote Access

Not able to attend in person? Remote participants can use ReadyTalk Audio & Net conference to phone in to listen, while viewing the presentation via the ReadyTalk site.

Web Access Code: 4864835

USA & Canada call-in number:
1 (866) 740-1260
Access Code: 4864835#

International callers:
Please visit this website to see if a toll-free call-in number is available for your international location.

If not, you will need to pay for the call yourself and use this phone number:

(303) 248-0285.