Distribution of radon concentrations in child-care facilities in South Korea

作者：Lee Cheol Min^*; Kwon Myung hee; Kang Dae Ryong; Park Tae Hyun; Park Si Hyun; Kwak Jung Eun

来源：Journal of Environmental Radioactivity, 2017, 167: 80-85.

DOI：10.1016/j.jenvrad.2016.11.021

• Radon concentrations
• Child-care facility
• Children's health
• South Korea

This study was conducted to provide fundamental data on the distribution of radon concentrations in child day-care facilities in South Korea and to help establish radon mitigation strategies. For this study, 230 child-care centers were randomly chosen from all child-care centers nationwide, and alpha track detectors were used to examine cumulative radon exposure concentrations from January to May 2015. The mean radon concentration measured in Korean child-care centers is approximately 52 Bq m(-3), about one-third of the upper limit of 148 Bq m(-3), which is recommended by South Korea's Indoor Air Quality Control in Public Use Facilities, etc. Act and the U.S. Environmental Protection Agency (EPA). Furthermore, this concentration is about 50% lower than 102 Bq m(-3), which is the measured concentration of radon in houses nationwide from December 2013 to February 2014. Our results indicate that the amount of ventilation, as a major determining factor for indoor radon concentrations, is strongly correlated with the fluctuation of indoor radon concentrations in Korean child-care centers.

• 出版日期2017-2