In this study, we measured the concentration of Particulate Matter (PM10), Formaldehyde (HCHO), and Total Bacteria Count (TBC) at three facilities: elderly care centers, day care centers, and postnatal care centers located in the cities of Seoul, Sejong, Daegu and Ulsan from January 1, 2012 to December 31, 2015. PM10 concentration was the highest in the day care centers and HCHO concentration was the highest in the postnatal care centers. TBC concentration was the highest in the day care centers. Comparing the different cities, PM10 concentration was the highest in Sejong, HCHO concentration was the highest in Seoul, and TBC concentration was the highest in Daegu. This study is expected to be helpful in preventing damage to health from the contaminated indoor air at sensitive facilities, and can be used as basic data for indoor air quality management.

Abstract
 1. 서 론
 2. 연구대상 및 방법
  2.1 연구기간 및 대상
  2.2 시료채취 및 분석
 3. 연구결과 및 고찰
  3.1 오염물질별 농도
  3.2 시설별 오염물질의 농도
  3.3 지역별 오염물질의 농도
 4. 결 론
 References

• 안지희(순천향대학교 환경보건학과) | Jihee An (Department of Environmental Health Science, Soonchunhyang University)
• 오유진(순천향대학교 환경보건학과) | Yujin Oh (Department of Environmental Health Science, Soonchunhyang University)
• 홍은주(순천향대학교 환경보건학과) | Eunju Hong (Department of Environmental Health Science, Soonchunhyang University)
• 손부순(순천향대학교 환경보건학과) | Bu-Soon Son (Department of Environmental Health Science, Soonchunhyang University) Corresponding author