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KMID : 1143420210140050239
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Public Health Weekly Report
2021 Volume.14 No. 5 p.239 ~ p.247
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Development of the indoor air quality monitoring model based on Korea National Health and Nutrition Examination Survey (KNHANES)
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Kim Sun-Ja
Kim Yeon-Jung
Hwang Yun-Hyung
Oh Kyung-Won
Park Ji-Young
Lee Ki-Young
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Abstract
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This study was conducted to develop a residential indoor air quality (IAQ) monitoring model that can be applied to the Korea National Health and Nutrition Examination Survey (KNHANES) system; a national cross-sectional surveillance system that has been assessing the health and nutritional status of Koreans since 1998. The KNHANES is conducted by the Korea Disease Control and Prevention Agency (KDCA) and approximately 10,000 persons participate in the survey. The IAQ measurement items selected were PM10, PM2.5, carbon dioxide, formaldehyde, total suspended bacteria, carbon monoxide (IAQ maintenance criteria of the Indoor Air Quality Control Act), nitrogen dioxide, radon, total volatile compounds (TVOC), and fungi (IAQ recommendation criteria) in consideration of domestic and international studies of IAQ. The survey items included 30 questions, including housing-related factors, IAQ management factors such as ventilation, resident behavioral factors such as cooking and the use of air fresheners, and outdoor influencing factors. A preliminary survey was conducted on 60 households among the households subject to KNHANES to examine the applicability of the IAQ monitoring model. The preliminary survey showed that carbon dioxide (35%), TVOC (25%), fungi (13%), and radon (13%) exceeded the IAQ criteria, and PM10, total suspended bacteria, carbon monoxide, and nitrogen dioxide were acceptable for all households. Based on the accuracy and ease of measurement in comparison with domestic and international surveys and the results of the preliminary investigation, four measurements (PM2.5, TVOC, formaldehyde, and carbon dioxide) and 30 survey items were selected by the study’s IAQ subcommittee. To characterize the IAQ of Korean homes, this study’s model was applied to 1,200 KNHANES households from July 2020 to October 2021.
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KEYWORD
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Korea National Health and Nutrition Examination Survey(KNHANES), Indoor air quality measurement, developing model
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