몽골 울란바토르시 게르촌 주택의 겨울철 실내 초미세먼지(PM_2.5) 농도의 시간적 변이

Temporal Variation of Winter Indoor PM_2.5 Concentrations in Dwellings in Ger Town of Ulaanbaatar, Mongolia

Objectives: In Mongolian housing, they use coal as a fuel for indoor heating and cooking. The combustion of coal releases particulate matter, which can affect indoor air quality. The purpose of this study was to analyze the concentrations of indoor PM_2.5 in winter time dwellings in ger town. Methods: In this study, indoor PM_2.5 concentrations, temperature and humidity in houses were measured by a real-time PM monitor, while the time activity patternsof the residents were also observed. Results: The correlation between factors that may affect the indoor air quality was analyzed.The indoor PM_2.5 concentrations were 178.4±152.7 µg/m³ (n=37). Five types of indoor PM_2.5 concentrations have been classified, which were associated with indoor activity. The stove type, fuel types and indoor activities such as cleaning, cooking and opening the stoves were not significantly associated with indoor PM_2.5 levels. Conclusions: Further study is needed to determine the effect of stove type through 24hours of indoor air quality monitoring.