title: An evaluation of the impact of flooring types on exposures to fine and coarse particles within the residential micro-environment using CONTAM.
abstract: Typical resuspension activities within the home, such as walking, have been estimated to contribute up to 25% of personal exposures to PM10. Chamber studies have shown that for moderate walking intensities, flooring type can impact the rate at which particles are re-entrained into the air. For this study, the impact of residential flooring type on incremental average daily (24 h) time-averaged exposure was investigated. Distributions of incremental time-averaged daily exposures to fine and coarse PM while walking within the residential micro-environment were predicted using CONTAM, the multizone airflow and contaminant transport program of the National Institute of Standards and Technology. Knowledge of when and where a person was walking was determined by randomly selecting 490 daily diaries from the EPA's consolidated human activity database (CHAD). On the basis of the results of this study, residential flooring type can significantly impact incremental time-averaged daily exposures to coarse and fine particles (α=0.05, P<0.05, N=490, Kruskal-Wallis test) with high-density cut pile carpeting resulting in the highest exposures. From this study, resuspension from walking within the residential micro-environment contributed 6-72% of time-averaged daily exposures to PM10.
authors.affiliation: Department of Chemical, Biological and Agricultural Engineering, University of Technology, Kingston, Jamaica.
authors.forename: Lisa
authors.initials: L
authors.lastname: Bramwell
authors.affiliation: Department of Civil and Environmental Engineering, Clarkson University, Potsdam, New York, USA.
authors.forename: Jing
authors.initials: J
authors.lastname: Qian
authors.affiliation: Dakota Consulting, Silver Spring, Maryland, USA.
authors.forename: Cynthia
authors.initials: C
authors.lastname: Howard-Reed
authors.affiliation: Department of Mathematics, Clarkson University, Potsdam, New York, USA.
authors.forename: Sumona
authors.initials: S
authors.lastname: Mondal
authors.affiliation: Department of Civil and Environmental Engineering, Clarkson University, Potsdam, New York, USA.
authors.forename: Andrea R
authors.initials: AR
authors.lastname: Ferro
mesh_terms: D000393:Air Pollutants / Q000032:analysis*; D003198:Computer Simulation; D004781:Environmental Exposure / Q000032:analysis*; D004784:Environmental Monitoring; D005430:Floors and Floorcoverings; D006798:Housing; D006801:Humans; D008396:Maryland; D008962:Models, Theoretical; D010316:Particle Size; D016138:Walking
chemical_list: D000393:Air Pollutants