ISSN : 1738-4125(Print)
ISSN : 2287-7509(Online)
ISSN : 2287-7509(Online)
유아교육기관에서의 실내공기질 조사 및 실내활동에 따른 입자상오염물질의 농도특성
Investigation of indoor air quality and characteristics of particulate matters concentration followed by indoor activities in preschool classrooms
Received 6 September 2006, accepted 27 September 2006
Abstract
This study was performed to investigate indoor air quality and to characterize the concentration ofparticulate matters followed by human activities in preschool classrooms. Concentrations of PM10, PM2.5, andPM1 were measured every 5-minute intervals by means of a dust monitor adopting the principle of lightscattering. Two mini-volume air samplers were used further to measure the I/O concentration ratio of PM10and to calibrate the dust monitor since the photometric method often exaggerates the mass of fine particles.The calibration factor in the study environment was determined as 0.64. In the preschool classrooms, theranges of average indoor PM10, PM2.5, and PM1 concentrations were 51.5~117.6, 21.5~98.4, and 16.2~84.5 ㎍/㎥, respectively, while that of I/O concentration ratio was 0.8~1.3. Based on correlation analysis amongvarious environmental parameters, PM1 was slightly correlated with humidity (r=0.416, p<0.01). However,outdoor PM10 was strongly related with indoor PM2.5 (r=0.95, p<0.01), with PM1 (r=0.94, p<0.01), and withPM10 (r=0.84, p<0.01). The trend of PM2.5 and PM1 concentrations appeared to be very similar unlike thecase of PM10. Since the elevated coarse particle concentration (2.5㎛
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