DOI: 10.1016/j.atmosenv.2014.05.013
Scopus记录号: 2-s2.0-84900803036
论文题名: Characteristics of ultrafine particle sources and deposition rates in primary school classrooms
作者: Laiman R ; , He C ; , Mazaheri M ; , Clifford S ; , Salimi F ; , Crilley L ; R ; , Megat Mokhtar M ; A ; , Morawska L
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 94 起始页码: 28
结束页码: 35
语种: 英语
英文关键词: Air exchange rate
; Deposition rate
; Emission rate
; Indoor sources
; Schools
; Ultrafine particles
Scopus关键词: Air
; Carbon dioxide
; Deposition
; Deposition rates
; Finance
; Particulate emissions
; Printing
; Air exchange rates
; Emission rates
; Indoor sources
; Schools
; Ultrafine particle
; Teaching
; aluminum
; carbon dioxide
; Bayesian analysis
; concentration (composition)
; deposition
; human activity
; indoor air
; numerical model
; particle size
; air
; air conditioning
; air quality
; article
; Australia
; Bayesian learning
; chair
; cleaning
; computer
; environmental parameters
; heating
; human
; measurement
; particle deposition rate
; primary school
; printing
; priority journal
; time series analysis
; ultrafine particle source
; wood
; Australia
; Brisbane
; Queensland
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: The aim of this work was to investigate changes in particle number concentration (PNC) within naturally ventilated primary school classrooms arising from local sources either within or adjacent to the classrooms. We quantify the rate at which ultrafine particles were emitted either from printing, grilling, heating or cleaning activities and the rate at which the particles were removed by both deposition and air exchange processes. At each of 25 schools in Brisbane, Australia, two weeks of measurements of PNC and CO2 were taken both outdoors and in the two classrooms. Bayesian regression modelling was employed in order to estimate the relevant rates and analyse the relationship between air exchange rate (AER), particle infiltration and the deposition rates of particle generated from indoor activities in the classrooms. During schooling hours, grilling events at the school tuckshop as well as heating and printing in the classrooms led to indoor PNCs being elevated by a factor of more than four, with emission rates of (2.51±0.25)×1011pmin-1, (8.99±6.70)×1011pmin-1 and (5.17±2.00)×1011pmin-1, respectively. During non-school hours, cleaning events elevated indoor PNC by a factor of above five, with an average emission rate of (2.09±6.30)×1011pmin-1. Particles were removed by both air exchange and deposition; chiefly by ventilation when AER>0.7h-1 and by deposition when AER<0.7h-1. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81287
Appears in Collections: 气候变化事实与影响
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作者单位: International Laboratory for Air Quality and Health, Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane 4000, Australia; Faculty of Applied Sciences, Universiti Teknologi MARA, Shah Alam, 40450 Selangor, Malaysia
Recommended Citation:
Laiman R,, He C,, Mazaheri M,et al. Characteristics of ultrafine particle sources and deposition rates in primary school classrooms[J]. Atmospheric Environment,2014-01-01,94