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Main Title Estimating contributions of outdoor fine particles to indoor concentrations and personal exposures : effects of household characteristics and personal activities /
Author Wallace, L. ; Williams, R. ; Suggs, J. ; Jones, P. ;
Other Authors
Author Title of a Work
Wallace, Lance A.
CORP Author Environmental Protection Agency, Research Triangle Park, NC. National Exposure Research Lab.
Publisher National Exposure Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency,
Year Published 2006
Report Number EPA 600/R-06/023
Stock Number PB2006-113533
OCLC Number 71340765
Subjects Air--Pollution ; Air quality ; Air--Pollution--Measurement
Additional Subjects Fine particles ; Outdoor air ; Indoor air ; Environmental exposure ; Infiltration ; Households ; Characteristics ; Sulfur ; Air exchange rates ; Personal activities
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EKBD  EPA-600/R-06-023 Research Triangle Park Library/RTP, NC 09/22/2006
NTIS  PB2006-113533 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 76 p. : ill. (some col.) ; 28 cm.
A longitudinal study of personal, indoor, and outdoor exposures to PM(sub 2.5) and associated elements was carried out involving 37 residents of the Research Triangle Park area in North Carolina. Participant exposures were monitored for 7 consecutive days in each of four seasons. A main goal of the study was to estimate the contribution of outdoor PM(sub 2.5) to indoor concentrations and personal exposures. This contribution depends on the infiltration factor (the fraction of outdoor PM(sub 2.5) remaining airborne after penetrating indoors), which can be estimated using sulfur as a marker for particles of outdoor origin. The annual average infiltration factors ranged from 0.26 to 0.89, and depended strongly on air exchange rates. The outdoor contributions to personal exposure were then regressed longitudinally on outdoor concentrations measured at a central monitoring station, with a range of R(sup 2) values from 0.19 to 0.88. Variables significantly affecting indoor air PM(sub 2.5) concentrations included smoking and cooking, the number of persons in the household, burned food, use of a kitchen exhaust fan, and duration of candle use. These findings might have important implications for epidemiological studies.
"By Lance Wallace, Ron Williams, Jack Suggs and Paul Jones." "March 2006." "EPA-600/R-06/023." Contains bibliographic references.