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http://dx.doi.org/10.5668/JEHS.2018.44.4.397

Indoor Air Quality and Human Health Risk Assessment for Un-regulated Small-sized Sensitive Population Facilities  

Shin, Hyejin (Environmental Health Research Department, National Institute of Environmental Research)
Park, Woosang (Department of Environmental Energy Engineering, Seoul National University of Science and Technology)
Kim, Bokyung (Environmental Health Research Department, National Institute of Environmental Research)
Ji, Kyunghee (Department of Occupational and Environmental Health, Yongin University)
Kim, Ki-Tae (Department of Environmental Energy Engineering, Seoul National University of Science and Technology)
Publication Information
Journal of Environmental Health Sciences / v.44, no.4, 2018 , pp. 397-407 More about this Journal
Abstract
Objectives: The purpose of this study is to investigate human health risk assessment of indoor air pollutants at small-sized public-use facilities (e.g., daycare centers, hospital and elderly care facilities) that the susceptible population is mainly used. Methods: To assess indoor air quality (IAQ), the concentrations of indoor air contaminants such as HCHO, benzene, toluene, ethylbenzene, xylene, styrene, PM-10, CO, $NO_2$ and $O_3$ in air samples were measured according to the Indoor Air Quality Standard Method. By conducting the questionnaire survey, the major factors influencing IAQ were identified. Human health risk assessment was carried out in the consideration of type of use (user and worker) at 75 daycare centers, 34 hospitals and 40 elderly care facilities. Results: As a result of measurement of indoor air contaminants, the average concentration of HCHO and TVOCs in hospitals was higher than daycare centers and elderly care facilities, about 8.8 and 23.5% of hospitals were exceeded by IAQ standard. In human health risk assessment, for the user of daycare centers and elderly care facilities, the mean carcinogenic risk of HCHO inhalation was higher than acceptable value. Except for HCHO, other values were determined under acceptable risk. Similarly, for the worker of hospitals, the mean carcinogenic risk of HCHO inhalation was higher than acceptable value and other values were evaluated under acceptable risk. In contrast, the risk levels of other contaminants measured in elderly care facilities were acceptable. In the determination of factors influencing IAQ, the construction year, building type, ventilation time, and the use of air cleaner were identified. Conclusions: This study provides the information for establishing the plans of public health management of IAQ at small-sized public-use facilities that have not yet been placed under the regulation. The findings suggest the consideration of human health risk assessment results for the IAQ standards.
Keywords
Indoor air quality; small-sized public-use facilities; susceptible population; human health risk assessment; indoor air contaminants;
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