环境中的99Tc及其迁移
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摘要: 锝是1937年制得的第一种人工放射性元素。长期以来,人们对它的危害并不重视。但锝在U和Pu核裂变时产额很高,特别是99Tc,可在核爆炸和反应堆中大量生成,且半衰期很长,进入环境后可长期滞留、蓄积,是环境中重要的长寿命核素之一。
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