센서를 이용한 이산화탄소와 미세먼지의 장기간 시간적인 변이를 활용한 어린이집의 실내환경수준 평가 = Assessment of Indoor Air Quality in Daycare Centers using Long-term Time Variation of Carbon Dioxide and Particulate Matter Measured by Monitoring Censors

다국어 초록 (Multilingual Abstract)

Objectives: The purposes of the study were to analyze the temporal variation of carbon dioxide (CO 2 ) and particulate matter (PM) in daycare centers and evaluate the appropriateness of the official test method of onetime measurement.
Methods: Indoor air quality in 46 daycare centers in the Seoul Metropolitan Area was measured as specified in the official test method of Indoor Air Quality Management law. In addition, indoor air quality in the 46 daycare centers was measured over 37 days using a real-time monitor (AirGuard K).
Results: The daily means of CO 2 and PM in the 46 daycare centers were 1042.74 ± 134.45 ppm and 67.60 ± 18.25 µg/m 3 , respectively. Indoor air quality in the daycare centers showed significant temporal fluctuation. Measurements for single days were significantly different from the 37-day average exposure. Relative error of short term exposure decreased with an increase in the number of sampling days. The noncompliance rate for CO 2 using the official testing method was 2.17%, and none exceeded the PM 10 standard of 100 µg/m 3 . With monitoring over 37 days, the daily noncompliance rate for CO2 was 50.4% and the daily noncompliance rate for PM was 13.8%.
Conclusions: When the official test method evaluates the indoor air at daycare centers one day per year, the results may not represent actual indoor air quality over a longer period of time. Real-time monitoring devices could be an alternative for managing indoor air quality.

참고문헌 (Reference)

1 Burtscher H, "The occurrence of ultrafine particles in the specific environment of children" 13 : 89-94, 2012

2 Szigeti T, "Spatial and temporal variation of particulate matter characteristics within office buildings—The OFFICAIR study" 587 : 59-67, 2017

3 Lazović I, "PM and CO2 variability and relationship in the different school environments" 21 (21): 179-187, 2015

4 Hung IF, "Indoor radon concentrations in Taiwanese homes" 29 (29): 1859-1870, 1994

5 Ferng SF, "Indoor air quality assessment of daycare facilities with carbon dioxide, temperature, and humidity as indicators" 65 (65): 14-, 2002

6 Annesi-Maesano I, "Indoor air quality and sources in schools and related health effects" 16 (16): 491-550, 2013

7 Ministry of Environment, "Indoor Air Quality Control In Public Use Facilities"

8 National Institute of Environmental Research, "Environmental health monitoring service in built environments of susceptible population" Korean Society of Environmental Health 2016

9 Szczurek A, "Dynamics of carbon dioxide concentration in indoor air" 29 (29): 2193-2199, 2015

10 Bateson TF, "Children's response to air pollutants" 71 (71): 238-243, 2007