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NTIS 바로가기지하수토양환경 = Journal of soil and groundwater environment, v.19 no.6, 2014년, pp.37 - 48
한이경 (부경대학교 지구환경과학과) , 김세윤 (부경대학교 지구환경과학과) , 허효진 (부경대학교 지구환경과학과) , 이민희 (부경대학교 지구환경과학과)
Lab scale rhizofiltration by using four plants was performed to investigate the uranium removal efficiency from groundwater. Lettuce (Lactuca sativa L.), Chinese cabbage (Brassica campestris L.), radish sprouts (Raphanus sativus L.) and buttercup (Oenanthe javanica) were cultivated during 3 weeks in...
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핵심어 | 질문 | 논문에서 추출한 답변 |
---|---|---|
우라늄이 뼈에 축적되면 어떤 질병을 유발하는가? | 인체에 유입되는 우라늄의 가장 지배적인 형태는 중탄산염 착화합물(UO2(HCO3)2)으로 알려져 있으며(Hodge, 1973; Almeida et al., 2004), 인체 내 농도가 높을 때 신장장애를 초래하는 것으로 보고되고 있고(CEPA, 2001), 우라늄이 뼈에 축적되면 골격계 암을 유발할 수 있는 것으로 알려졌다(Shin et al., 2002). | |
우라늄이란? | 우라늄은 방사성원소의 하나로써 철과 유사한 은백색의 광택이 있는 악티늄족 원소에 속하며(원자번호: 92), 반응성이 높아서 여러 원소들과 결합하여 다양한 복합체를 형성한다(Schulz, 1965). 천연우라늄은 질량수 234(존재 백분율 0. | |
뿌리여과법으로 우라늄을 정화하는 원리 | 뿌리여과법은 식물 뿌리를 이용하여 지하수에 존재하는 중금속을 흡착하여 제거하는 방법으로, 식물체의 중금속 흡착기작은 크게 세 가지로 ① 식물의 세포 밖 침전, ② 세포벽 침전과 흡착, ③ 세포질 구획 또는 액포에 의한 세포 내의 흡착 등이 있다. 식물은 세포 내에 K+, Ca2+, Mg2+, NO−3, SO42-과 같은 필수 이온의 흡착이 가능하다. 대부분 식물의 세포벽이나 표피층은 음전하로 대전되어 있어서(Beveridge and Murray, 1980), 지하수에 존재하는 양이온을 전기적으로 흡착하게 된다(Suzuki et al., 2002). 우라늄은 주로 식물 뿌리 세포벽의 카르복실기(COO-)와 결합하여 흡착되는 것으로 알려져 있다(Waite et al., 1994; Langmuir, 1997). |
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