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Yamamoto, Yusuke*; Watanabe, Takahiro; Niwa, Masakazu; Shimada, Koji
JAEA-Testing 2023-003, 67 Pages, 2024/02
A long-term geosphere stability for geological disposal is evaluated by the past geological environmental changes and modern conditions. Stable hydrogen and oxygen isotope ratios (D, O) of geological samples are useful information to estimate the past environmental changes and modern conditions. Recently, the thermal conversion elemental analyzer and isotope ratio mass spectrometer (TC-EA/IRMS) were installed in the Tono Geoscience Center for D and O measurements of geological samples. In this study, we reported analytical methods of D and O using international standard reference materials. In addition, evaluation tests of uncertainty by repeated analyses of the standards were performed using the TC-EA/IRMS. Furthermore, the D and O analyses by the TC- EA/IRMS were also applied to fault rock samples.
Porntepkasemsan, B.*; Atarashi-Andoh, Mariko; Amano, Hikaru
JAERI-Data/Code 2000-032, 43 Pages, 2000/11
no abstracts in English
Atarashi-Andoh, Mariko; Amano, Hikaru; Porntepkasemsan, B.; Kakiuchi, Hideki; Ichimasa, Michiko*; Ichimasa, Yusuke*
KURRI-KR-53, p.18 - 21, 2000/10
no abstracts in English
Amano, Hikaru; Porntepkasemsan, B.; Atarashi-Andoh, Mariko; Kushita, Kohei
KURRI-KR-53, p.6 - 9, 2000/09
no abstracts in English
Amano, Hikaru; Porntepkasemsan, B.; Atarashi-Andoh, Mariko; Kushita, Kohei
KURRI-KR-53, p.6 - 9, 2000/09
no abstracts in English