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NTIS 바로가기지하수토양환경 = Journal of soil and groundwater environment, v.22 no.5, 2017년, pp.63 - 70
Radon concentrations were measured in 250 groundwater samples collected from the Goesan area where uraniferous black slate and granites abundantly occur in the formations. The measured radon levels ranged from 0.90 to 7,218.7 Bq/L with the median value of 54.3 Bq/L, similar to the value measured in ...
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핵심어 | 질문 | 논문에서 추출한 답변 |
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라돈의 반감기는 며칠인가? | 라돈(222Rn)은 가장 잘 알려진 천연방사성핵종 중 하나로서 우라늄(238U) 방사능계열에서 라듐(226Ra)의 방사능붕괴로 생긴다. 반감기가 3.82일에 불과한 라돈은 무색, 무취의 불활성기체이며 붕괴과정에서 알파입자를 발생한다. 라돈은 인간에게 피폭되는 방사선 양의 50% 이상을 차지하며 흡연에 이어 두 번째의 폐암 발병인자로 알려져 있다. | |
괴산군의 지질구성은 어떠한가? | 1 km2이고 지형은 남동쪽이 최고 해발고도 900 m 정도로 높고 북서쪽으로 갈수록 낮아져 최저 해발고도는 약 100 m 정도이다. 연구지역의 지질은 시대 미상의 옥천층군과 화강암으로 대분된다(Lee et al., 1996)(Fig. | |
라돈은 무엇인가? | 라돈(222Rn)은 가장 잘 알려진 천연방사성핵종 중 하나로서 우라늄(238U) 방사능계열에서 라듐(226Ra)의 방사능붕괴로 생긴다. 반감기가 3. |
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