The Fort Collins commuter study: Variability in personal exposure to air pollutants by microenvironment

This study investigated the role of microenvironment on personal exposures to black carbon (BC), fine particulate mass (PM2.5 ), carbon monoxide (CO), and particle number concentration (PNC) among adult residents of Fort Collins, Colorado, USA. Forty-four participants carried a backpack containing personal monitoring instruments for eight nonconsecutive 24-hour periods. Exposures were apportioned into five microenvironments: Home, Work, Transit, Eateries, and Other. Personal exposures exhibited wide heterogeneity that was dominated by within-person variability (both day-to-day and between microenvironment variability). Linear mixed-effects models were used to compare mean personal exposures in each microenvironment, while accounting for possible within-person correlation. Mean personal exposures during Transit and at Eateries tended to be higher than exposures at Home, where participants spent the majority of their time. Compared to Home, mean exposures to BC in Transit were, on average, 129% [95% confidence interval: 101% 162%] higher and exposures to PNC were 180% [101% 289%] higher in Eateries.

[1]  H. Oliver Gao,et al.  Exposure to fine particle mass and number concentrations in urban transportation environments of New York City , 2011 .

[2]  Liliana Suárez,et al.  Personal exposure to particulate matter in commuters using different transport modes (bus, bicycle, car and subway) in an assigned route in downtown Santiago, Chile. , 2014, Environmental science. Processes & impacts.

[3]  B. Brunekreef,et al.  Personal sampling of particles in adults: relation among personal, indoor, and outdoor air concentrations. , 1998, American journal of epidemiology.

[4]  Y Le Moullec,et al.  Personal exposure of Paris office workers to nitrogen dioxide and fine particles , 2002, Occupational and environmental medicine.

[5]  Eric A Whitsel,et al.  Estimating Error in Using Ambient PM2.5 Concentrations as Proxies for Personal Exposures: A Review , 2010, Epidemiology.

[6]  David E Newby,et al.  Short term exposure to air pollution and stroke: systematic review and meta-analysis , 2015, BMJ : British Medical Journal.

[7]  L. Sheldon,et al.  The Influence of Human Activity Patterns on Personal PM Exposure: A Comparative Analysis of Filter-Based and Continuous Particle Measurements , 2001, Journal of the Air & Waste Management Association.

[8]  P. Koutrakis,et al.  Characterization of indoor particle sources: A study conducted in the metropolitan Boston area. , 1999, Environmental health perspectives.

[9]  Raymond Agius,et al.  Performance of a microenviromental model for estimating personal NO2 exposure in children , 2012 .

[10]  Matthew L. Thomas,et al.  Estimates and 25-year trends of the global burden of disease attributable to ambient air pollution: an analysis of data from the Global Burden of Diseases Study 2015 , 2017, The Lancet.

[11]  John Volckens,et al.  Development of a method for personal, spatiotemporal exposure assessment. , 2009, Journal of environmental monitoring : JEM.

[12]  David E Newby,et al.  Global association of air pollution and heart failure: a systematic review and meta-analysis , 2013, The Lancet.

[13]  Jonathan I Levy,et al.  Predicting residential indoor concentrations of nitrogen dioxide, fine particulate matter, and elemental carbon using questionnaire and geographic information system based data. , 2007, Atmospheric environment.

[14]  J. Chow,et al.  Determinants of personal exposure to fine particulate matter (PM2.5) in adult subjects in Hong Kong. , 2018, The Science of the total environment.

[15]  Nicholas Good,et al.  The Fort Collins Commuter Study: Impact of route type and transport mode on personal exposure to multiple air pollutants , 2015, Journal of Exposure Science and Environmental Epidemiology.

[16]  S. Rappaport,et al.  Variability of environmental exposure to fine particles, black smoke, and trace elements among a Swedish population , 2011, Journal of Exposure Science and Environmental Epidemiology.

[17]  Birthe Uldahl Kjeldsen,et al.  Contribution of various microenvironments to the daily personal exposure to ultrafine particles: Personal monitoring coupled with GPS tracking , 2015 .

[18]  Paul Cullinan,et al.  Personal exposures and microenvironment concentrations of PM2.5, VOC, NO2 and CO in Oxford, UK , 2004 .

[19]  Scott Fruin,et al.  Measurements and predictors of on-road ultrafine particle concentrations and associated pollutants in Los Angeles , 2008 .

[20]  L. Sheppard,et al.  Estimated Hourly Personal Exposures to Ambient and Nonambient Particulate Matter Among Sensitive Populations in Seattle, Washington , 2004, Journal of the Air & Waste Management Association.

[21]  L. Kupper,et al.  Variability of environmental exposures to volatile organic compounds , 2004, Journal of Exposure Analysis and Environmental Epidemiology.

[22]  Ronald W. Williams,et al.  Determinants of the associations between ambient concentrations and personal exposures to ambient PM2.5, NO2, and O3 during DEARS , 2012 .

[23]  David Briggs,et al.  Personal exposure to particulate air pollution in transport microenvironments , 2004 .

[24]  Z. Andersen,et al.  Cardiovascular and lung function in relation to outdoor and indoor exposure to fine and ultrafine particulate matter in middle-aged subjects. , 2014, Environment international.

[25]  J. Schauer,et al.  A comparative assessment of PM2.5 exposures in light-rail, subway, freeway, and surface street environments in Los Angeles and estimated lung cancer risk. , 2013, Environmental science. Processes & impacts.

[26]  K. Kreiss,et al.  Evaluation of individual-based and group-based exposure estimation of microbial agents in health effects associated with a damp building , 2013, Journal of Exposure Science and Environmental Epidemiology.

[27]  A. Peters,et al.  Long-term air pollution exposure and cardio- respiratory mortality: a review , 2013, Environmental Health.

[28]  Peter P Egeghy,et al.  Determinants of temporal variability in NHEXAS-Maryland environmental concentrations, exposures, and biomarkers , 2005, Journal of Exposure Analysis and Environmental Epidemiology.

[29]  C. Rand,et al.  Indoor exposures to air pollutants and allergens in the homes of asthmatic children in inner-city Baltimore. , 2005, Environmental research.

[30]  Hardeo Sahai,et al.  The Analysis of Variance , 2000 .

[31]  Anna Buczynska,et al.  Airborne particulate matter and BTEX in office environments. , 2008, Journal of environmental monitoring : JEM.

[32]  Paul J. Catalano,et al.  Relative contribution of outdoor and indoor particle sources to indoor concentrations , 2000 .

[33]  J. Zietsman,et al.  Maternal exposure to PM2.5 in south Texas, a pilot study. , 2018, The Science of the total environment.

[34]  Peter Steer,et al.  Using continuous sampling to examine the distribution of traffic related air pollution in proximity to a major road , 2011 .

[35]  K Reijula,et al.  [Indoor air quality]. , 1996, Duodecim; laaketieteellinen aikakauskirja.

[36]  Lidia Morawska,et al.  School children's personal exposure to ultrafine particles in the urban environment. , 2014, Environmental science & technology.

[37]  Qing Yu Meng,et al.  How does infiltration behavior modify the composition of ambient PM2.5 in indoor spaces? An analysis of RIOPA data. , 2007, Environmental science & technology.

[38]  B. Coull,et al.  Ambient site, home outdoor and home indoor particulate concentrations as proxies of personal exposures. , 2008, Journal of environmental monitoring : JEM.

[39]  B. Brunekreef,et al.  Variability of exposure measurements in environmental epidemiology. , 1987, American journal of epidemiology.

[40]  H. Sahai,et al.  The Analysis of Variance: Fixed, Random and Mixed Models , 2000 .

[41]  W. H. Engelmann,et al.  The National Human Activity Pattern Survey (NHAPS): a resource for assessing exposure to environmental pollutants , 2001, Journal of Exposure Analysis and Environmental Epidemiology.

[42]  Marjan Mansourian,et al.  Systematic review and metaanalysis of air pollution exposure and risk of diabetes , 2014, European Journal of Epidemiology.

[43]  L. Morawska,et al.  Personal exposure to ultrafine particles: the influence of time-activity patterns. , 2014, The Science of the total environment.

[44]  Qing Yu Meng,et al.  Determinants of Indoor and Personal Exposure to PM(2.5) of Indoor and Outdoor Origin during the RIOPA Study. , 2009, Atmospheric environment.

[45]  B. Brunekreef,et al.  Determinants of personal and indoor PM2.5 and absorbance among elderly subjects with coronary heart disease , 2007, Journal of Exposure Science and Environmental Epidemiology.

[46]  Luc Int Panis,et al.  Impact of time–activity patterns on personal exposure to black carbon , 2011 .

[47]  Frank J. Kelly,et al.  WHO Guidelines for Indoor Air Quality: Selected pollutants. , 2010 .

[48]  Year-long continuous personal exposure to PM2.5 recorded by a fast responding portable nephelometer , 2010 .