Arid
DOI10.4209/aaqr.2015.01.0039
Characterization, Fate, and Re-Suspension of Aerosol Particles (0.3-10 mu m): The Effects of Occupancy and Carpet Use
Hussein, Tareq1,2; Dada, Lubna2; Juwhari, Hassan1; Faouri, Dina1
通讯作者Hussein, Tareq
来源期刊AEROSOL AND AIR QUALITY RESEARCH
ISSN1680-8584
EISSN2071-1409
出版年2015
卷号15期号:6页码:2367-2377
英文摘要

In this study we present the particle number size distribution (diameter 0.3-10 mu m with 1-minute time resolution) inside four offices (naturally ventilated) inside two university buildings. Each office had a typical environment in terms of occupancy and furniture. We focused on the differences between workdays and weekends in terms of particle number (PN) and particle mass (PM, assuming spherical particles with unit density) concentrations. Moreover, we illustrated the effect of workers’ activity (occupancy, smoking, etc.). We also applied a simple indoor aerosol model to estimate the fate (gravitational settling and exfiltration) and source strength of aerosol particles within the measured particle size range. During workdays, the highest measured 24-hour average PM10-1 in the occupied office was 41.5 mu g m(-3) (PN10-1 = 2.2 cm(-3)) compared to 9.0 mu g m(-3) (PN10-1 = 1.2 cm(-3)) in the unoccupied offices. The ventilation rate of the offices that were opposite to each other was about 0.15 h(-1) whereas it was 0.28-0.38 h(-1) for the other offices, which were a bit distant from each other. The gravitational settling analysis suggested that a suitable particle density (rho(p)) could be similar to 1.7 g cm(-3) with a shape factor chi similar to 1.57, which is similar to mineral dust particles. The gravitational settling rate of particles around 2 mu m in diameter was about 0.3 h(-1). The source strength of indoor dust particles was higher in the occupied and carpeted offices (re-suspension emission rate as high as 235 mu g m(-3) h(-1)) in comparison to unoccupied and uncarpeted offices (75 mu g m(-3) h(-1)). This study provided us with an insight about the effect of occupancy and carpet use on the dynamic behavior (fate and resuspension) of dust particles inside university office buildings located in semi-arid regions.


英文关键词Indoor air quality Particle number size distribution Particulate matter Aerodynamic diameter Gravitational settling
类型Article
语种英语
国家Jordan ; Finland
收录类别SCI-E
WOS记录号WOS:000363396200018
WOS关键词INDOOR AIR-QUALITY ; MASS CONCENTRATIONS ; ELEMENTAL COMPOSITION ; SIZE CHARACTERIZATION ; NUMBER CONCENTRATIONS ; PARTICULATE MATTER ; DEPOSITION RATES ; ACTIVITY PATTERN ; EXCHANGE-RATES ; VENTILATION
WOS类目Environmental Sciences
WOS研究方向Environmental Sciences & Ecology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/185524
作者单位1.Univ Jordan, Dept Phys, Amman 11942, Jordan;
2.Univ Helsinki, Dept Phys, UHEL, FI-00014 Helsinki, Finland
推荐引用方式
GB/T 7714
Hussein, Tareq,Dada, Lubna,Juwhari, Hassan,et al. Characterization, Fate, and Re-Suspension of Aerosol Particles (0.3-10 mu m): The Effects of Occupancy and Carpet Use[J],2015,15(6):2367-2377.
APA Hussein, Tareq,Dada, Lubna,Juwhari, Hassan,&Faouri, Dina.(2015).Characterization, Fate, and Re-Suspension of Aerosol Particles (0.3-10 mu m): The Effects of Occupancy and Carpet Use.AEROSOL AND AIR QUALITY RESEARCH,15(6),2367-2377.
MLA Hussein, Tareq,et al."Characterization, Fate, and Re-Suspension of Aerosol Particles (0.3-10 mu m): The Effects of Occupancy and Carpet Use".AEROSOL AND AIR QUALITY RESEARCH 15.6(2015):2367-2377.
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