DOI: 10.1016/j.atmosenv.2014.12.064
Scopus记录号: 2-s2.0-84920161252
论文题名: Spatial and indoor/outdoor gradients in urban concentrations of ultrafine particles and PM2.5 mass and chemical components
作者: Zauli Sajani S ; , Ricciardelli I ; , Trentini A ; , Bacco D ; , Maccone C ; , Castellazzi S ; , Lauriola P ; , Poluzzi V ; , Harrison R ; M
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 103 起始页码: 307
结束页码: 320
语种: 英语
英文关键词: Deposition
; Indoor-outdoor air
; Nanoparticles
; PM2.5
Scopus关键词: Deposition
; Design of experiments
; Housing
; Nanoparticles
; Size distribution
; Chemical compositions
; Indoor/outdoor ratios
; Outdoor air
; Outdoor air pollution
; Outdoor concentrations
; Particle concentrations
; Particle number size distribution
; Semi-volatile materials
; Particles (particulate matter)
; nitrate
; aerosol composition
; atmospheric deposition
; indoor air
; particle size
; size distribution
; spatial variation
; traffic congestion
; urban pollution
; air pollution
; air temperature
; ambient air
; Article
; atmospheric deposition
; atmospheric pressure
; building material
; chemical composition
; cold exposure
; concentration (parameters)
; controlled study
; environmental impact assessment
; experimental design
; human
; particle size
; particulate matter
; pressure measurement
; residential area
; surface property
; traffic
; urban area
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: In order to investigate relationships between outdoor air pollution and concentrations indoors, a novel design of experiment has been conducted at two sites, one heavily trafficked and the other residential. The novel design aspect involves the introduction of air directly to the centre of an unoccupied room by use of a fan and duct giving a controlled air exchange rate and allowing an evaluation of particle losses purely due to uptake on indoor surfaces without the losses during penetration of the building envelope which affect most measurement programmes. The rooms were unoccupied and free of indoor sources, and consequently reductions in particle concentration were due to deposition processes within the room alone. Measurements were made of indoor and outdoor concentrations of PM2.5, major chemical components and particle number size distributions. Despite the absence of penetration losses, indoor to outdoor ratios were very similar to those in other studies showing that deposition to indoor surfaces is likely to be the major loss process for indoor air. The results demonstrated a dramatic loss of nitrate in the indoor atmosphere as well as a selective loss of particles in the size range below 50nm, in comparison to coarser particles. Depletion of indoor particles was greater during a period of cold weather with higher outdoor concentrations probably due to an enhancement of semi-volatile materials in the outdoor particulate matter. Indoor/outdoor ratios for PM2.5 were generally higher at the trafficked site than the residential site, but for particle number were generally lower, reflecting the different chemical composition and size distributions of particles at the two sites. © 2014. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82041
Appears in Collections: 气候变化事实与影响
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作者单位: Regional Centre for Environment and Health, ARPA Emilia-Romagna, Via Begarelli, 13, Modena, Italy; Regional Centre for Urban Areas, ARPA Emilia-Romagna, Via Rocchi, 19, Bologna, Italy; Provincial District of Ferrara, ARPA Emilia-Romagna, Via Bologna 534, 44122 Ferrara, Italy; Division of Environmental Health and Risk Management, School of Geography, Earth and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham, United Kingdom; Department of Environmental Sciences/Center of Excellence in Environmental Studies, King Abdulaziz University, Jeddah, Saudi Arabia
Recommended Citation:
Zauli Sajani S,, Ricciardelli I,, Trentini A,et al. Spatial and indoor/outdoor gradients in urban concentrations of ultrafine particles and PM2.5 mass and chemical components[J]. Atmospheric Environment,2015-01-01,103