title: Indoor inhalation intake fractions of fine particulate matter: review of influencing factors.
abstract: Exposure to fine particulate matter (PM2.5) is a major contributor to the global human disease burden. The indoor environment is of particular importance when considering the health effects associated with PM2.5exposures because people spend the majority of their time indoors and PM2.5exposures per unit mass emitted indoors are two to three orders of magnitude larger than exposures to outdoor emissions. Variability in indoor PM2.5intake fraction (iFin,total), which is defined as the integrated cumulative intake of PM2.5per unit of emission, is driven by a combination of building-specific, human-specific, and pollutant-specific factors. Due to a limited availability of data characterizing these factors, however, indoor emissions and intake of PM2.5are not commonly considered when evaluating the environmental performance of product life cycles. With the aim of addressing this barrier, a literature review was conducted and data characterizing factors influencing iFin,totalwere compiled. In addition to providing data for the calculation of iFin,totalin various indoor environments and for a range of geographic regions, this paper discusses remaining limitations to the incorporation of PM2.5-derived health impacts into life cycle assessments and makes recommendations regarding future research.
authors.affiliation: Division of Chemical Engineering, California Institute of Technology, Pasadena, CA, USA.|Department of Environmental Science and Management, Portland State University, Portland, OR, USA.
authors.forename: N
authors.initials: N
authors.lastname: Hodas
authors.affiliation: Institute of Occupational Medicine, Edinburgh, UK.
authors.forename: M
authors.initials: M
authors.lastname: Loh
authors.affiliation: Department of Public Health Sciences, University of California, Davis, CA, USA.
authors.forename: H-M
authors.initials: HM
authors.lastname: Shin
authors.affiliation: Department of Environmental Health Sciences, University of Michigan, Ann Arbor, MI, USA.
authors.forename: D
authors.initials: D
authors.lastname: Li
authors.affiliation: Department of Public Health Sciences, University of California, Davis, CA, USA.
authors.forename: D
authors.initials: D
authors.lastname: Bennett
authors.affiliation: School of Public Health, University of California, Berkeley, CA, USA.|Lawrence Berkeley National Laboratory, Berkeley, CA, USA.
authors.forename: T E
authors.initials: TE
authors.lastname: McKone
authors.affiliation: Department of Environmental Health Sciences, University of Michigan, Ann Arbor, MI, USA.
authors.forename: O
authors.initials: O
authors.lastname: Jolliet
authors.affiliation: Environmental and Occupational Health Sciences Institute, Rutgers University, Piscataway, NJ, USA.|International Centre for Indoor Environment and Energy, Technical University of Denmark, Kgs. Lyngby, Denmark.
authors.forename: C J
authors.initials: CJ
authors.lastname: Weschler
authors.affiliation: Department of Environmental Health, National Institute for Health and Welfare, Helsinki, Finland.
authors.forename: M
authors.initials: M
authors.lastname: Jantunen
authors.affiliation: Environmental and Occupational Health Sciences Institute, Rutgers University, Piscataway, NJ, USA.
authors.forename: P
authors.initials: P
authors.lastname: Lioy
authors.affiliation: Department of Management Engineering, Technical University of Denmark, Kgs. Lyngby, Denmark.
authors.forename: P
authors.identifier: 0000-0001-7148-6982
authors.initials: P
authors.lastname: Fantke
mesh_terms: D016902:Air Pollution, Indoor / Q000032:analysis*; D004781:Environmental Exposure / Q000032:analysis*; D004784:Environmental Monitoring; D006801:Humans; D052638:Particulate Matter / Q000032:analysis*
chemical_list: D052638:Particulate Matter
keywords: Fine particulate matter; Human exposure; Indoor air; Intake fraction; Life cycle impact assessment; Ventilation