JOPSS - Search Results

JAEA Reports

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, $^{18}$ 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 $^{18}$ O measurements of geological samples. In this study, we reported analytical methods of D and $^{18}$ 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 $^{18}$ O analyses by the TC- EA/IRMS were also applied to fault rock samples.

Journal Articles

Determination of alkali and alkaline earth elements in radioactive waste generated from reprocessing plant by liquid electrode plasma optical emission spectrometry

Yamamoto, Masahiko; Do, V. K.; Taguchi, Shigeo; Kuno, Takehiko; Takamura, Yuzuru*

Journal of Radioanalytical and Nuclear Chemistry, 327(1), p.433 - 444, 2021/01

https://doi.org/10.1007/s10967-020-07490-1

Times Cited Count：0 Percentile：0.01(Chemistry, Analytical)

A simple, practical, and reliable analytical method for determination of Na, K, Ca, Sr, and Ba by liquid electrode plasma optical emission spectrometry is developed. Appropriate emission lines for quantification, interferences from co-existing elements, and effect of measurement conditions with cell damage have been investigated. The spike and recovery tests using actual sample have been performed for method validation, and negligible sample matrix effect has been observed. Consequently, the method is successfully applied to several radioactive wastes. The obtained data have been agreed well with data from computer calculation and inductively coupled plasma optical emission spectrometry within 10% difference.

JAEA Reports

Quantitative X-ray Fluorescence analysis of major and trace elements in rock samples at Tono Geoscience Center

Shimizu, Mayuko; Sano, Naomi; Shibata, Kenji*

JAEA-Testing 2016-004, 40 Pages, 2017/02

JAEA-Testing-2016-004.pdf:2.69MB

X-ray fluorescence analysis is one of the methods commonly used to reveal whole-rock chemical composition, which is basic information of rock samples. This report shows methods to prepare glass beads of fused samples and to use the X-ray fluorescence spectrometer (Rigaku ZSX Primus II) housed in Tono Geoscience Center, and the evaluation of precision and accuracy of the measurement.

Journal Articles

Utilization of radiation facilities in Takasaki Advanced Radiation Research Institute under the MEXT grants

Hirota, Koichi

Hoshasen To Sangyo, (139), p.33 - 36, 2015/12

http://ci.nii.ac.jp/naid/40020674698

The article describes utilization programs for irradiation facilities for ion beam, -ray and electron beam in Takasaki Advanced Radiation Research Institute under the MEXT (Ministry of Education, Sports, Culture, Science and Technology) grants. The feature of the facilities and technical support of assistants in the fields of creation of genetic resources, analytical technology, and material development under the grants are introduced. The article also includes recent research activities of development of new flowers, visualization of Li in lithium-ion battery, and development of distortion resistance of fluoro-rubber etc.

Journal Articles

New prompt -ray analysis using neutron resonance absorption

Matsue, Hideaki

Bunseki, 2002(11), P. 645, 2002/11

https://ci.nii.ac.jp/naid/10010385365

no abstracts in English

Journal Articles

Neutron activation analysis of rock and plant samples using the facilities at KUR

Miyamoto, Yutaka

Hoshaka Bunseki, (14), p.16 - 22, 2002/05

http://ci.nii.ac.jp/naid/110009483825

no abstracts in English

Journal Articles

Biological application in a super-high-resolution microbeam PIXE project

Kamiya, Tomihiro

Radioisotopes, 50(8), p.42 - 48, 2001/08

no abstracts in English

Journal Articles

Prompt neutron activation analysis with reactor neutrons

Yonezawa, Chushiro

Non-Destructive Elemental Analysis, p.58 - 114, 2001/06

no abstracts in English

Journal Articles

Non-destructive trace element analysis

Oshima, Masumi

Look Japan, 5, p.30 - 31, 2000/06

no abstracts in English

JAEA Reports

None

Yamasaki, Shinichi*

JNC TJ8430 2000-005, 159 Pages, 2000/03

JNC-TJ8430-2000-005.pdf:3.95MB

no abstracts in English

Journal Articles

Development of trace element analysis by using multi dimensional analysis

Hatsukawa, Yuichi; Oshima, Masumi; Hayakawa, Takehito; Toh, Yosuke; Shinohara, Nobuo

Hoshaka Bunseki, (10), p.19 - 20, 2000/03

http://ci.nii.ac.jp/naid/110009481740

no abstracts in English

JAEA Reports

Nuclear waste glass alteration in silica saturated solution depth profiling by ERDA and ESCA for simulated nuclear waste/ glass

; Kubota, Mitsuru*; *; *

JNC TN8430 98-001, 12 Pages, 1998/11

JNC-TN8430-98-001.pdf:0.87MB

Leaching experiments were performed with simulated nuclear waste glasses in silica saturated water at 90 $^{circ}$ C for periods of 28 days in order to clarify the alteration mechanism of waste glass under silica saturation. After leaching experiments, the depth profiles of some elements of glass surfaces were measured by ERDA and ESCA. Depth profiles of H and soluble elements, such as B and Na, for the simulated nuclear waste glass after leaching experiments demonstrated the formation of glass hydration layer and the depletion of soluble elements in the glass hydration layer. The results suggest that alteration of nuclear waste glass under silica saturation is attributed to glass hydration and the leaching behaviour of soluble elements depends on the growth of the glass hydration layer.