DOI: 10.1016/j.atmosenv.2014.05.020
Scopus记录号: 2-s2.0-84902468480
论文题名: Residential infiltration of fine and ultrafine particles in Edmonton
作者: Kearney J ; , Wallace L ; , MacNeill M ; , Héroux M ; -E ; , Kindzierski W ; , Wheeler A
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 94 起始页码: 793
结束页码: 805
语种: 英语
英文关键词: Exposure misclassification
; Fine particles
; Indoor air quality
; Infiltration factor
; Residential
; Ultrafine particles
Scopus关键词: Air cleaners
; Indoor air pollution
; Exposure misclassification
; Fine particles
; Indoor air quality
; Infiltration factor
; Residential
; Ultrafine particle
; Housing
; air quality
; epidemiology
; indoor air
; infiltration
; particle size
; particulate matter
; pollutant source
; pollution exposure
; residential location
; airborne particle
; ambient air
; article
; Canada
; cooking
; home
; human
; measurement error
; priority journal
; residential area
; summer
; wind
; winter
; Alberta
; Canada
; Edmonton
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: Airborne indoor particles arise from both indoor sources and ambient particles that have infiltrated indoors. The intra-urban variability of infiltration factors (Finf) is a source of measurement error in epidemiological studies estimating exposure from a central site measurement, hence information on the within and between-home variability of Finf is useful to better characterize ambient PM exposure. The objective of this paper was to estimate magnitudes and predictors of daily residential infiltration factors (Finf) and ambient/non-ambient components of indoor ultrafine particle (UFP) and fine particle (FP) concentrations. FPs and UFPs were measured continuously for 7 consecutive days in 74 Edmonton homes in winter and summer 2010 (50 homes in each season). Simultaneous measurements of outdoor (near-home) FP and ambient (at a central site) UFP concentrations were also measured. Daily infiltration factors were estimated for each home; considerable variability was seen within and between homes. For FPs, seasonal-averaged Finf (the average of the 7 daily Finf estimates) ranged from 0.10 to 0.92 in winter (median=0.30, n=49) and 0.31 to 0.99 in summer (median=0.68, n=48). For UFPs, the seasonal-averaged Finf ranged from 0.08 to 0.47 across homes in winter (median=0.21, n=33 houses) and from 0.16 to 0.94 in summer (median=0.57, n=48). The higher median Finf in summer was attributed to a high frequency of open windows. Daily infiltration factors were also estimated based on the indoor/outdoor PM1 sulfur ratio. These estimates were poorly correlated with DustTrak-based FP infiltration factor estimates; the difference may be due to losses of volatile components on the PM1 filter samples. Generalized linear mixed models were used to identify variables significantly associated with Finf and the non-ambient component of indoor FP and UFP concentrations. Wind speed was consistently associated with Finf across all seasons for both FPs and UFPs. The use of an air cleaner was associated with reduced UFP infiltration factors in summer, suggesting a potential method of reducing infiltrated UFPs. Various cooking activities and smoking were associated with the non-ambient component of indoor FP and UFP concentrations. On average, the majority of indoor FPs were of ambient origin while the majority of UFPs were of indoor origin. In summer, more of the indoor FP and UFP concentrations were from ambient origin, compared to winter, due to the higher infiltration factors. The variability in FP and UFP Finf within and between homes may cause substantial exposure misclassification in epidemiological studies using only ambient measurements. © 2014. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81028
Appears in Collections: 气候变化事实与影响
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作者单位: Air Health Science Division, Health Canada, 269 Laurier Ave. West, Ottawa, ON K1A 0K9, Canada; Consultant, Santa Rosa, CA, United States; School of Public Health, University of Alberta, 3-57B South Academic Building, Edmonton, AB, Canada; WHO European Centre for Environment and Health, Platz der Vereinten Nationen 1, 53113 Bonn, Germany; Centre for Ecosystem Management, School of Natural Sciences, Edith Cowan University, 270 Joondalup Drive, Joondalup 6027, Perth, WA, Australia
Recommended Citation:
Kearney J,, Wallace L,, MacNeill M,et al. Residential infiltration of fine and ultrafine particles in Edmonton[J]. Atmospheric Environment,2014-01-01,94