DOI: 10.1016/j.atmosenv.2014.08.011
Scopus记录号: 2-s2.0-85027928533
论文题名: Quantification of differences between occupancy and total monitoring periods for better assessment of exposure to particles in indoor environments
作者: Wierzbicka A ; , Bohgard M ; , Pagels J ; H ; , Dahl A ; , Löndahl J ; , Hussein T ; , Swietlicki E ; , Gudmundsson A
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 106 起始页码: 419
结束页码: 428
语种: 英语
英文关键词: Indoor environment
; Particles
; Source strength
Scopus关键词: Apartment houses
; Elementary particles
; Societies and institutions
; Teaching
; Exposure assessment
; Indoor environment
; Number size distribution
; Particle characteristics
; Particle concentrations
; Particle number concentration
; Scanning mobility particle sizer
; Source strength
; Monitoring
; air quality
; epidemiology
; health risk
; indoor air
; particle size
; photometer
; pollution exposure
; public health
; quantitative analysis
; toxicology
; Article
; controlled study
; cooking
; environmental exposure
; environmental monitoring
; food processing
; frying
; gas exchange
; heating
; high school
; particle size
; particulate matter
; photometer
; primary school
; priority journal
; temperature
; Finland
; Sweden
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: For the assessment of personal exposure, information about the concentration of pollutants when people are in given indoor environments (occupancy time) are of prime importance. However this kind of data frequently is not reported. The aim of this study was to assess differences in particle characteristics between occupancy time and the total monitoring period, with the latter being the most frequently used averaging time in the published data. Seven indoor environments were selected in Sweden and Finland: an apartment, two houses, two schools, a supermarket, and a restaurant. They were assessed for particle number and mass concentrations and number size distributions. The measurements using a Scanning Mobility Particle Sizer and two photometers were conducted for seven consecutive days during winter in each location. Particle concentrations in residences and schools were, as expected, the highest during occupancy time. In the apartment average and median PM2.5 mass concentrations during the occupancy time were 29% and 17% higher, respectively compared to total monitoring period. In both schools, the average and medium values of the PM2.5 mass concentrations were on average higher during teaching hours compared to the total monitoring period by 16% and 32%, respectively. When it comes to particle number concentrations (PNC), in the apartment during occupancy, the average and median values were 33% and 58% higher, respectively than during the total monitoring period. In both houses and schools the average and median PNC were similar for the occupancy and total monitoring periods. General conclusions on the basis of measurements in the limited number of indoor environments cannot be drawn. However the results confirm a strong dependence on type and frequency of indoor activities that generate particles and site specificity. The results also indicate that the exclusion of data series during non-occupancy periods can improve the estimates of particle concentrations and characteristics suitable for exposure assessment, which is crucial for estimating health effects in epidemiological and toxicological studies. © 2014 The Authors. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81928
Appears in Collections: 气候变化事实与影响
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作者单位: Division of Ergonomics and Aerosol Technology, Lund University, Box 118, Lund, Sweden; The University of Jordan, Department of Physics, Amman, Jordan; University of Helsinki, Department of Physics, P. O. Box 48, Helsinki, Finland; Division of Nuclear Physics, Lund University, Box 118, Lund, Sweden
Recommended Citation:
Wierzbicka A,, Bohgard M,, Pagels J,et al. Quantification of differences between occupancy and total monitoring periods for better assessment of exposure to particles in indoor environments[J]. Atmospheric Environment,2015-01-01,106