한국토양 내 천연 방사성핵종에 의한 거주민의 방사선피폭평가
Evaluation of Radiation Exposure to Residents by Naturally Residing Radionuclides in the Soil of Korea
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초록
한국 토양내 천연방사성핵종 중 238U, 232Th, 40K 농도를 분석하여 거주민의 방사선피폭을 평가하였다. 분석결과 238U, 232Th, 40K은 각각 15.77±7.27, 290.05±73.92, 750.30±165.38Bq/kg 값을 나타냈다. 천연방사성핵종 농도를 바탕으로 산출한 흡수선량률은 213.76±46.37nGy/hr이며, 동일 지역에서 측정한 공간감마흡수선량률은 123.90±19.18nGy/hr이였다. 천연방사성핵종(238U, 232Th, 40K)을 대상으로 거주민의 유효선량률은 0.26mSv/yr로 나타나 UNSCEAR에서 제시한 세계 평균유효선량률인 0.07mSv/yr보다 높은 값을 나타냈다.
Abstract
We investigated the amounts of radiation exposure from 238U, 232Th, and 40K which are three major radionuclides naturally residing in soil of the Korean peninsula. The experimental results showed that the concentrations of the radionuclides were 15.77±7.27, 290.05±73.92 and 750.30±165.38Bq/kg respectively. The absorbed dose rate based on the measured concentrations was 213.76±46.37nGy/hr, while the spatial gamma absorbed dose rate measured in the same region was 123.90±19.18nGy/hr. The effective dose rate was 0.26mSv/yr, which is significantly higher than the world average effective dose rate 0.07mSv/yr provided by the UNSCEAR.
참고문헌 (16)
- Dragovic S, "Distribution of primordial radionuclides in surface soils from serbia and montenegro", Radiation Measurements, 41, pp.611~616 (2006)
- Florou H, "An assessment of the external radiological impact in areas of Greece with elevated natural radioactivity", Journal of Environmental Radioactivity, 93, pp.74~83 (2007)
- Narayana Y, "External gamma radiation dose rates on coastal Karnataka", Journal of radiological protection, 14, pp.257~264 (1994)
- Bolca M, "Radioactivity in soils and various foodstuffs from the Gediz River Basin of Turkey", Radiation Measurements, 42, pp.263~270 (2007)
- UNSCEAR, "2000. Source and Effects of Ionizing Radiation" (2000)
- 전국환경방사능조사, , ~, pp.KINS (2006), ER-028, Vol. 38
- 원자력이용시설 주변 방사선 환경 조사 및 평가보고서, , ~, pp.KINS, AR-140 Vol. 17
- 임수경, "식품류의 토륨 방사능 농도와 내부피폭선량", 박사, pp.2004
- Akhtr N, "Radiation dose from natural and manmade radionuclides in the soil of niab, faisalabad, Pakistan", The Nucleus, 41(1), pp.27~34 (2004)
- Kohshi Dhikasawa, "Terrestrial Gamma Radiation in kochi Prefecture Japan", Journal of health Science, 47(4), pp.362~372 (2001)
- Diana A, "Assessment of the environmental contamination with long-lived radionuclides around an operating RBMK reactor station", Journal of Environmental Radioactivity, 90, pp.68~77 (2006)
- KINS, "전국 지방환경 방사선", 능 측정요원 교육자료, 2006
- "ASTM C-1000-05, Standard Test Method for Radiochemical Determination of Uranium Isotopes in Soil by Alpha Spectrometry", ~
- 신영홍, "한반도 남부의 중력이상과 화강암의 분포", 지질학회지, 42(3), pp.383~396 (2006), 대한지질학회
- Exposure of the population in the United States and Canada from Natural Background Radiation, , ~, pp.NCRP report No. 94 (1987)
- El-Arabi AM, "226Ra, 232Th and 40K concentrations in igneous rocks from eastern desert, Egypt and its radiological implications", Radiation measurement, 42, pp.94~100 (2007)