대기오염과 실내 거주자의 활동도가 교실 내부의 입자 크기별 먼지 농도에 미치는 영향

• 영문명: The Effect of Outdoor Air and Indoor Human Activity on Mass Concentrations of Size-Selective Particulate in Classrooms
• 발행기관: 한국환경보건학회
• 저자명: 최상준
• 간행물 정보: 『1. 한국환경보건학회지』제34권 제2호, 137~147쪽, 전체 11쪽
• 주제분류: 공학 > 환경공학
• 파일형태: PDF
• 발행일자: 2008.04.30

영문 초록

This study evaluated the effects of the human activity and outdoor air on concentrations of size-selective particulate matters (PM) by conducting a realtime measurement in classrooms and on roofs at 4 elementary schools, 3 middle schools and 3 high schools in Incheon City. PM concentrations featured repetitive pattern of increasing during break time (including lunch hours) and cleaning time while decreasing during class hours. This trend was more prominent with inhalable PM and PM10 than fine PMs (PM2.5, PM1.0). The indoor/outdoor (I/O) ratio of inhalable PM and PM10 exceeded 1 while that of fine PMs was close to or below 1. The PM2.5 (out)/PM10 (out) ratio stood at 0.59 (.16) and the PM2.5 (in)/PM10 (in) ratio was 0.29 (.09), suggesting that occupant activity had a greater effect upon coarse particles (PM10-PM2.5) than upon fine particles (PM2.5, PM1.0). The correlations between the indoor and the outdoor PM concentrations showed a stronger positive correlation for fine particles than that of coarse particles. The linear regression analysis of PM concentrations indoor and outdoor indicated a higher determinant coefficient (r²>0.9), and consistency for fine particles than in case of coarse particles. In conclusion, the results of this study suggest that the indoor coarse particle concentration is more attributed to occupant activity and the indoor fine particle concentration is more influenced by outdoor air pollution.

키워드

size-selective particulate PM10 PM2.5 human activity school indoor air quality surrounding environment