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NTIS 바로가기Ocean and polar research, v.38 no.2, 2016년, pp.139 - 148
조보은 (한국해양과학기술원 해양환경방사능연구센터) , 김석현 (한국해양과학기술원 해양환경방사능연구센터)
The activity concentrations of
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핵심어 | 질문 | 논문에서 추출한 답변 |
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육상으로 유입된 210Pb의 방사송 핵종들이 해양으로 유입되고, 해양으로 유입되는 방사성 핵종들이 해저로 유입되는 과정은? | 금속원소인 210Pb은 대기 중 에어로졸에 흡착되어 강수 및 낙진을 통하여 육상과 해양표면으로 유입된다. 육상으로 유입된 방사성 핵종들은 식물의 증산작용 등으로 인해 대기로 재 부유 하거나 하천을 통해 해양으로 유입되며, 해양으로 유입된 방사성 핵종들은 해수 중 부유물질에 흡착하여 해저 퇴적물로 유입된다(Karali et al. 1977; Preiss etal. | |
210Pb과 210Po이란 무엇인가? | 210Pb과 210Po은 238U 붕괴사슬에 속하는 자연방사성 핵종이다. 해양환경에서 210Pb과 210Po은 해수 중에 존재하는 226Rn(반감기: 1,600년)의 방사성 붕괴와 지각으로부터 대기로 방출된 불활성기체인 222Rn(반감기: 3. | |
해양환경에서 210Pb과 210Po는 어떻게 생성되는가? | 210Pb과 210Po은 238U 붕괴사슬에 속하는 자연방사성 핵종이다. 해양환경에서 210Pb과 210Po은 해수 중에 존재하는 226Rn(반감기: 1,600년)의 방사성 붕괴와 지각으로부터 대기로 방출된 불활성기체인 222Rn(반감기: 3.8일)의 딸핵종들의 낙하에 의하여 생성된다. 대기 중으로 방출된 222Rn(반감기: 3. |
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