| Keywords |
Radon ; Public building ; Seasonal radon concentration ; Province |
| Abstract |
The purpose of this study was to survey radon concentration and to evaluate radon annual effective dose in public buildings. We investigated 351 public buildings using alpha-track detector between January 2008 and May 2009. The concentration of indoor radon concentration for public building was 52.6±33.1 Bq/m3 (GM: 46.6 Bq/m3), and the range (min-max) was 15.2 to 317.7 Bq/m3. The indoor radon concentration for all public buildings were far below the recommended standards of IAQ Guideline, Ministry of Environment Korea. Indoor radon concentration of the C.B Province (AM: 70.0±53.2, GM: 58.7 Bq/m3) is higher than other Province. Also, Except for J.J Province, radon concentration at winter-season higher than that of the other seasons (spring, summer, autumn), respectively (p<0.01). The annual effective indoor radon dose was 0.37mSv/y, this values not exceed recommended standards of ICKL. This study will provide useful data for the determination of radon management and reduction at the public buildings. |