GEOLOGIC MIGRATION POTENTIALS OF TC-99 AND NP-237
GEOLOGIC MIGRATION POTENTIALS OF TC-99 AND NP-237
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DOI：
10.1126/science.203.4387.1337
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发表时间：
1979-01-01
期刊：
影响因子：
56.9
通讯作者：
FRANCIS, CW
中科院分区：
文献类型：
--
作者：
BONDIETTI, EA;FRANCIS, CW
在火成岩存在的情况下，相对流动的tco4和NpO2+可以被化学还原为不易溶解的氧化态，正如氧化还原测量所预测的那样。目前的风险评估认为，锝和镎有可能从高放射性废物储存库迁移，这可能高估了它们对公众的潜在危害，因为许多地下水中的铁（II）含量可能使这些元素处于不易溶解的氧化状态。
Relatively mobile TcO4–and NpO2+can be chemically reduced to less soluble oxidation states in the presence of igneous rocks, as predicted by oxidation-reduction measurements. Current risk assessments, which consider technetium and neptunium as potentially capable of migrating from high-level radioactive waste repositories, may be overestimating their potential hazard to the public since the Fe(II) content of many subsurface waters may maintain these elements in less soluble oxidation states.