E-4: Radioactive waste disposal: geological, hydrogeological and geochemical aspects.

[PE4-07] Origin of dissolved uranium in a deep groundwater in siliceous mudstone aquifer evaluated from ²³⁴U/²³⁸U activity ratios

*Chika Kuribayashi¹, Kazuya Miyakawa², Akane Ito^3,1, Masaharu Tanimizu¹ (1. Kwansei Gakuin Univ. (Japan), 2. JAEA (Japan), 3. Kyusyu Univ. (Japan))

キーワード：groundwater, uranium, isotopic tracer