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KMID : 1156220040300030259
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Journal of Environmental Health Sciences
2004 Volume.30 No. 3 p.259 ~ p.263
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Variation of Formaldehyde Concentration in Preschool Facilities by Location and Indoor/Outdoor
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Yoon Chung-Sik
Park Dong-Uk
Park Doo-Yong
Jeong Jee-Yeon
Lee Gwang-Yong
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Abstract
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This study was performed to investigate airborne formaldehyde concentration in preschool facilities. Arithmetic mean of indoor formaldehyde concentration in urban area was 34.9 ppb(Geometric mean 24.4 ppb) whereas outdoor concentration was 21.5 ppb(GM 11.9 ppb). In rural area, formaldehyde concentrations were 36.4 ppb(GM 28.7 ppb), 4.1 ppb(GM 4.1 ppb), respectively. There is no statistical significance between the formaldehyde concentrations of urban classrooms and those of rural area. We verified that the distribution of airborne formaldehyde concentration was lognormal characteristic using Shapiro and Wilk test. The 6.7% of urban indoor samples was exceeded the domestic standard limit of indoor air quality. From our study and other study, we concluded that the major emission sources of formaldehyde in preschool facilities was in indoor rather than outdoor.
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KEYWORD
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Formaldehyde, Preschool, Classroom, Indoor air quality(IAQ)
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