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KMID : 0895420130230040356
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Journal of Korean Society of Occupational and Enviromental Hygiene
2013 Volume.23 No. 4 p.356 ~ p.366
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Exposure Assessment of PM2.5 in Manufacturing Industry Office Buildings
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Nam Mi-Ran
Jung Jong-Hyeon
Phee Young-Gyu
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Abstract
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Objectives: This study was conducted in order to evaluate PM2.5 concentrations at 20 offices connected to the manufacturing industry from the beginning of September to the end of November 2012.
Methods: A total of 20 samples were collected from 20 office buildings. Each PM2.5 sample was collected by a 37 mm PTFE filter attached to a Personal Environment Monitor.
Results: The geometric mean concentrations of PM2.5 in the offices was 23.47 ㎍/㎥, and the mean PM2.5 concentrations measured in smoking offices were much higher than those of measured in non-smoking offices(24.83 ㎍/㎥ and 21.55 ㎍/㎥, respectively). PM2.5 was revealed to be higher in small offices(39.52 ㎍/㎥) than in medium or large offices(22.69 ㎍/㎥ and 11.04 ㎍/㎥, respectively). The mean PM2.5 concentration of offices located on the 1st floor was higher than that of those on the 2nd floor, and those of offices located in the workplace were higher than those out of the workplace. The multiple regression model showed that concentration of PM2.5 was positively associated with the method of ventilation.
Conclusions: Smoking, ventilation method, location, and inflow of outdoor particulate matter are the most important factors for office PM2.5 concentrations.
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KEYWORD
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concentration, office, PM2.5
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