Radon exhalation rates have been determined for samples of concrete, gypsum board, marble, and tile among building materials that are used in domestic construction environment. Radon emanation was measured using the closed chamber method based on CR-39 nuclear track detectors. The radon concentrations in apartments of 100 households in Seoul, Busan and Gyeonggi Provinces were measured to verify the prediction model of indoor radon concentration. The results obtained by the four samples showed the largest radon exhalation rate of 0.34314 Bq/m2·h for sample concrete. The radon concentration contribution to indoor radon in the house due to exhalation from the concrete was 31.006 ± 7.529 Bq/m3. The difference between the prediction concentration and actual measured concentration was believed to be due to the uncertainty resulting from the model implementation.

Abstract
 1. 서 론
 2. 연구 방법
  2.1. 라돈 방출량 조사 및 실내 기여 라돈농도 예측
  2.2. 연구대상 시설 및 연구대상 건축자재 선정
  2.3. 실내농도 예측모델 검증을 위한 실제환경 농도 조사
 3. 결과 및 고찰
 4. 결론
 REFERENCE

• 이철민(평택대학교 환경융합시스템학과) | Cheolmin Lee (Department of Integrated Environmental Systems, PyeongTaek University) Corresponding author
• 곽윤경((사)한국라돈협회) | Yoonkyung Gwak (Korea Radon Association)
• 이동현((주)EHS 기술연구소) | Donghyun Lee (Institute of Technology for EHS)
• 이다정((사)한국라돈협회) | Dajeong Lee (Korea Radon Association)
• 조용석((사)한국라돈협회) | Yongseok Cho (Korea Radon Association)