Document Type

Article

Publication Title

Atmospheric Pollution Research

Publisher

Turkish National Committee for Air Pollution Research and Control (TUNCAP)

Publication Date

4-2013

Abstract

Due to temperature inversions and widespread residential woodstove use, Libby, Montana historically experienced elevated levels of ambient woodsmoke PM2.5 throughout the winter months. In an effort to reduce wintertime PM2.5, a large community–wide woodstove changeout was conducted between 2005 and 2007, removing nearly 1 200 old polluting stoves from service. To determine the impact of this intervention on indoor air quality, PM2.5 sampling was conducted in the gymnasiums of an elementary and middle school before, during, and after the woodstove changeout over a four–year period. Throughout the program, results showed that indoor PM2.5 concentrations at the elementary school were moderately high regardless of year or season (mean±sd, 31.9±14.1 μg/m3), ranging from 11.0 μg/m3 to 79.3 μg/m3. At the middle school, the mean was 12.2±11.2 μg/m3, with no differences by season. Although there was an overall improvement in ambient air quality (and reduction of woodsmoke–PM2.5) when comparing pre– and post– changeout PM2.5 concentrations, results suggest that the community–wide woodstove changeout did not have a significant impact on indoor air quality within the gymnasiums over this same time period. These findings are supported by the results of selected chemical markers of woodsmoke measured from indoor PM (including levoglucosan) at both schools, which also demonstrated no significant reductions throughout the four–year sampling program.

DOI

10.5094/APR.2013.025

Comments

Originally published in Atmospheric Pollution Research 4 (2013) 238‐244

Rights

©2013 Tony J. Ward, Christopher P. Palmer, Kathi Hooper, Megan Bergauff, Curtis W. Noonan

Creative Commons License

Creative Commons Attribution 3.0 License
This work is licensed under a Creative Commons Attribution 3.0 License.

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