Impact of Wood Combustion for Secondary Heating and Recreational Purposes on Particulate Air Pollution in a Suburb in Finland

Little information is available on the concentrations of ambient fine particles (PM2.5) in residential areas where wood combustion is common for recreational purposes and secondary heating. Further, the validity of central site measurements of PM2.5 as a measure of exposure is unclear. Therefore, ou...

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Bibliographic Details
Published in:Environmental science & technology 2015-04, Vol.49 (7), p.4089-4096
Main Authors: Yli-Tuomi, Tarja, Siponen, Taina, Taimisto, R. Pauliina, Aurela, Minna, Teinilä, Kimmo, Hillamo, Risto, Pekkanen, Juha, Salonen, Raimo O, Lanki, Timo
Format: Article
Language:English
Subjects:
Air pollution
Air Pollution - analysis
Correlation analysis
Emissions
Environmental science
Finland
Fossil fuels
Heating
Housing
Humans
Outdoor air quality
Particle Size
Particulate Matter - analysis
Recreation
Smoke - analysis
Vehicle Emissions - analysis
Wood
Wood - chemistry
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Summary:Little information is available on the concentrations of ambient fine particles (PM2.5) in residential areas where wood combustion is common for recreational purposes and secondary heating. Further, the validity of central site measurements of PM2.5 as a measure of exposure is unclear. Therefore, outdoor PM2.5 samples were repeatedly collected at a central site and home outdoor locations from a panel of 29 residents in a suburb in Kuopio, Finland. Source apportionment results from the central site were used to estimate the contributions from local sources, including wood combustion, to PM2.5 and absorption coefficient (ABS) at home outdoor locations. Correlations between the central and home outdoor concentrations of PM2.5, ABS, and their local components were analyzed for each home. At the central site, the average PM2.5 was 6.0 μg m– 3 during the heating season, and the contribution from wood combustion (16%) was higher than the contribution from exhaust emissions (12%). Central site measurements predicted poorly daily variation in PM2.5 from local sources. In conclusion, wood combustion significantly affects air quality also in areas where it is not the primary heating source. In epidemiological panel studies, central site measurements may not sufficiently capture daily variation in exposure to PM2.5 from local wood combustion.
ISSN:0013-936X
1520-5851
DOI:10.1021/es5053683