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Characterization of U series nuclides in geological materials by selective leaching method

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Abstract

Geological and geochemical events were elucidated in by using U series nuclides in combination with chemical leaching technique. Two examples were examined: (1) in the apatite-bearing sediment column samples U(VI) is moving, while U(IV) in the samples is almost retained, and (2) the redistribution of U occurred along the column under the monsoon climate. On the other hand, U in the conglomerate sample is divided into 5 categories by the leaching technique, which are related with exchangeable, carbonate, iron oxide, organic/sulfide and silicate components, respectively. Uranium is shown to be abundant in the carbonate and iron rich fractions of conglomerate sediment. Appropriate models are proposed in each case study.

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Authors and Affiliations

  1. Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology (AIST), Higashi 1-1-1, Tsukuba, Ibaraki, 305-8567, Japan

    Y. Kanai

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  1. Y. Kanai
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Kanai, Y. Characterization of U series nuclides in geological materials by selective leaching method. Journal of Radioanalytical and Nuclear Chemistry 255, 319–323 (2003). https://doi.org/10.1023/A:1022552703662

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