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KMID : 0365220200570010001
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Korean Journal of Public Health
2020 Volume.57 No. 1 p.1 ~ p.7
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Lee Dong-Soo
Guak Soo-Young
Kim Dong-Won
Kim Hye-Won
Lim So-Young
Jo Hye-Ri
Lee Ki-Young
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Abstract
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Objectives: Residents of ger in Ulaanbaatar used substantial amount of coals at winter. Indoor coal combustion caused higher indoor and outdoor PM2.5 concentration. However, other indoor activities affecting indoor PM2.5 concentration had not been found. The aim of this study was to define important indoor factors affecting indoor PM2.5 concentration in ger.
Methods: We measured PM2.5 concentration and observed indoor activities in ger. Two models were applied to find important indoor factors affecting PM2.5 concentration. First, multiple linear regression was used to detect significant factors. Second, linear mixed model was conducted in order to adjust difference of monitor and date.
Results: Outside PM2.5 concentration, adding fuel, indoor smoking, and ventilation were significant factors affecting indoor PM2.5 concentration. In addition to the factors, cooking was found to be an important factor when difference of monitors and date were included.
Conclusion: Residents of ger were exposed to higher indoor PM2.5 concentration. This study identified indoor activity affecting PM2.5 concentration. This result can be used as a basic information for indoor air quality improvement in ger.
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KEYWORD
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Ger, Indoor activity, Mongolia, Linear mixed model, PM2.5
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