실내 라돈 측정에 있어서 실내 공간의 체적과 측정되는 라돈농도의 상관관계 연구 = A Study on the Correlation between the Volume of Indoor Space and the Measured Concentration of Indoor Radon

다국어 초록 (Multilingual Abstract)

In this study, to analyze the correlation between the volume of indoor space and the concentration of radon, we measured the concentration of indoor radon in individual houses and apartments in Jeonju City.
To compare the volume of indoor space, we measured the volumes of large and small rooms in eight sites. The concentration of indoor radon was also measured to determine the hourly concentration changes, based on which we estimated the amount of annual exposure to indoor radon.
The results of this study are as follows.
The average concentration of radon at the eight spots in apartments in Jeonju City was measured at 90.12.
Regarding the average volume of radon concentration in large and small rooms at the eight measured spots, when the average volume of large rooms was 31.59, the average concentration of radon was found at 71.73 when the average volume of small rooms was 16.83, the average concentration of radon was measured at 108.51. Therefore, it was determined that indoor space volume and the concentration of indoor radon had an inverse proportional relationship.
The result of the survey on the hourly concentration of indoor radon showed that the highest concentration was between 8 a.m. and 10 a.m. (114.5) and the lowest concentration level was between 2 p.m. and 4 p.m. (67.7), with the change in radon concentration in a day was found to be about 46.8.
As a result of the estimation of the amount of annual exposure to indoor radon at the eight spots, C spot had the lowest level at 30.7 mRem/year, and F spot had the highest level at 216.6 mRem/year, even greater than the 130 mRem/year that UNSCEAR reported (refer to p. 59 of the main text, Fig 8. Annual Amount of Indoor Radon Exposure in Apartments).
In this study, we aimed to determine the correlation between the volume of indoor space and the concentration of indoor radon, for which we conducted continuous measurement. As the study involved the analysis of radon concentration changes according to volume, as well as the hourly change in indoor radon concentration, the results of this study are expected to be used as basic data for the measurement of the concentration of indoor radon in the future.

목차 (Table of Contents)

• Ⅰ. 서론 = 1
• Ⅱ. 이론적 배경 = 4
• 1. 라돈의 생성 = 4
• 2. 라돈의 실내 유입경로 = 7
• 3. 실내 라돈의 거동특성 = 11
• 4. 라돈의 인체에 대한 영향 = 13
• 5. 라돈 및 라돈 딸핵종 피폭선량 계산방법 = 19
• Ⅲ. 국내·외 기술개발현황 및 실내라돈 경감법 = 23
• 1. 라돈의 측정단위 = 23
• 2. 라돈의 측정 방법과 기기 = 24
• 3. 국내·외 라돈 조사 현황 = 32
• 4. 실내라돈 경감법 = 37
• Ⅳ. 측정원리 및 방법 = 40
• 1. 측정원리 = 40
• 2. 측정 방법 = 43
• Ⅴ. 연구결과 및 고찰 = 45
• 1. 온·습도·공간 선량율에 따른 실내 라돈농도 = 45
• 2. 테스트 셀을 이용한 비교 측정 = 48
• 3. 실내·외 라돈농도의 비교분석 = 50
• 4. 체적별 라돈농도 비교 분석 = 52
• 5. 시간대별 실내라돈농도 분석 = 56
• 6. 실내 라돈의 년간 피폭선량 예측 = 58
• Ⅵ. 요약 = 60
• 참고문헌 = 62