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JAEA Reports

Data-base of bulk chemical compositions and modal compositions of Toki granitic body

Sakai, Toshihiro

JAEA-Data/Code 2018-006, 75 Pages, 2018/07

JAEA-Data-Code-2018-006.pdf:2.9MB
JAEA-Data-Code-2018-006-appendix(CD-ROM).zip:0.87MB

Data of bulk chemical compositions (major elements and trace elements) and/or of modal compositions of the Toki granitic body are compiled as a data-base for the purpose of improving geological and petrological basic information of the Mizunami Underground Research Laboratory Project and the Regional Hydrogeological Study Project. 696 rock samples are collected from the outcrops and boreholes of the Regional Hydrogeological Study Project, and 636 rock samples are collected from the Mizunami Underground Research Laboratory Construction Site. The analysis data of rock samples, as granitic rock samples, intrusive rock samples and crack filling samples, are attached three-dimensional position information to each thesis and report.

Journal Articles

Sampling and treatment of rock cores and groundwater under reducing environments of deep underground

Ebashi, Katsuhiro; Yamaguchi, Tetsuji; Tanaka, Tadao; Araki, Kunio*; Saito, Masao*

JAERI-Conf 2005-007, p.242 - 247, 2005/08

no abstracts in English

Journal Articles

New technique for the determination of trace elements using multiparameter coincidence spectrometry

Hatsukawa, Yuichi; Toh, Yosuke; Oshima, Masumi; Hayakawa, Takehito; Shinohara, Nobuo; Kushita, Kohei; Ueno, Takashi; Toyoda, Kazuhiro*

Journal of Radioanalytical and Nuclear Chemistry, 255(1), p.111 - 113, 2003/01

 Times Cited Count:12 Percentile:35.03

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

no abstracts in English

Journal Articles

A High-sensitivity and non-destructive trace element analysis based on multiple $$gamma$$-ray detection

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

Journal of Nuclear Science and Technology, 39(4), p.292 - 294, 2002/04

 Times Cited Count:16 Percentile:27.47(Nuclear Science & Technology)

no abstracts in English

Journal Articles

Application of multiparameter coincidence spectrometry using a Ge detectors array to neutron activation analysis

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

Nuclear Instruments and Methods in Physics Research A, 482(1-2), p.328 - 333, 2002/04

 Times Cited Count:23 Percentile:17.74(Instruments & Instrumentation)

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

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

no abstracts in English

JAEA Reports

QA issues for site hydrochemical data used for groundwater evolution models

Sasamoto, Hiroshi; Yui, Mikazu; D.Savag*; Bille, B.*

JNC-TN8400 99-025, 32 Pages, 1999/06

JNC-TN8400-99-025.pdf:1.94MB

Groundwater data used for modelling site or repository evolution need to be assessed for their quality and whether they are "fit for purpose", prior to utilization. This report discuss factors and issues which impinge upon the quality of such data. It is recommended that geochemical modelleres : (1)are aware of how groundwater samples were collected, whether during drilling, during hydraulic testing, or thereafter, by in-situ measurement, pumped from boreholes, or by pressurised sampler ; (2)are aware of what procedures (if any) were used to "correct" samples for drill fluid contamination and what errors were associated with those methods ; (3)are aware of whether samples were subject to de-pressurisation during sampling, and whether geochemical modelling techniques were applied to correct the compositions of samples for that process ; (4)request different measures of redox activity (e.g., electrode measurements of Eh, concentrations of different redox-sensitive aqueous species) to be applied to key groundwater samples to investigate the extent of redox equilibrium ; (5)are aware of how groundwater samples were filtered and preserved for off-site analysis ; (6)ensure that adequate methods of groundwater filtration ($$<$$ 0.1$$mu$$m) and chemical analysis are applied to ensure accurate and reproducible analyses for dissolved aluminum at low levels of concentration (generally less than 0.2 mg/L) ; (7)are aware of elemental errors and detection limits in chemical analysis of groundwater samples and assess the quality of groundwater analyses via ion exchange balances and via a comparison of measured and calculated values for total dissolved solids contents. (8)ensure that detailed mineralogical analysis is carried out on rock samples from locations where key groundwater samples have been extracted.

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