Stable hydrogen and oxygen isotope analyses of geological samples using a thermal conversion elemental analyzer-isotope ratio mass spectrometer at Tono Geoscience Center

Yamamoto, Yusuke*; Watanabe, Takahiro; Niwa, Masakazu; Shimada, Koji

JAEA-Testing 2023-003, 67 Pages, 2024/02

JAEA-Testing-2023-003.pdf:4.63MB

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.

Instruments for the measurement of stable elements mass ratios and their application to environmental samples for the analysis of environmental behaviour of global warming gases and environmental additional materials

Amano, Hikaru; Porntepkasemsan, B.; Atarashi-Andoh, Mariko; Kushita, Kohei

KURRI-KR-53, p.6 - 9, 2000/09

no abstracts in English

Ultra-trace analysis using AMS

Kuwabara, Jun

no journal, , 

The principle and characteristic of Accelerator Mass Spectrometry (AMS) are explained. Dating method in archeology using AMS and the performance of AMS, installed at Ohminato Facility of JAEA, are also explained.

Studies on the soil carbon storage and its response to the climate change

Nagai, Haruyasu; Koarashi, Jun; Atarashi-Andoh, Mariko; Ota, Masakazu; Nagano, Hirohiko

no journal, , 

no abstracts in English