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Kitamura, Toshikatsu; Kabuto, Shoji*; Suzuki, Takashi; Togawa, Orihiko; Kitada, Yoshinobu*; Watanabe, Yukiya*
Dai-16-Kai Tandemu Kasokuki Oyobi Sono Shuhen Gijutsu No Kenkyukai Hokokushu, p.27 - 31, 2004/02
no abstracts in English
*
JNC TJ7400 2000-005, 20 Pages, 2000/02
JNC-TJ7400-2000-005.pdf:1.44MB
no abstracts in English
Sasamoto, Hiroshi; Yui, Mikazu; Savage, D.*; Bille, B.*
JNC TN8400 99-025, 32 Pages, 1999/06
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
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.
Bamba, Tsunetaka; *; Tamura, Yukito; *; Yonezawa, Chushiro; Carter, P.*
Analytical Sciences, 14, p.389 - 394, 1998/04
Times Cited Count：11 Percentile：38.78(Chemistry, Analytical)no abstracts in English
Tsuji, Hirokazu; *; Tsukada, Takashi; Nakajima, Hajime
Journal of Nuclear Science and Technology, 30(12), p.1234 - 1242, 1993/12
Times Cited Count：3 Percentile：38.1(Nuclear Science & Technology)no abstracts in English
Tsuji, Hirokazu; *; Nakajima, Hajime; Kondo, Tatsuo
JAERI-M 93-078, 42 Pages, 1993/05
no abstracts in English
Tanaka, Yoji*; Nakasawa, Otohiko*; Sugumoto, Hiroshi*; Takeshita, Hiroshi*
PNC TJ8224 92-002, 33 Pages, 1992/03
no abstracts in English
Tanaka, Yoji*; Nakasawa, Otohiko*; Sugumoto, Hiroshi*; Takeshita, Hiroshi*
PNC TJ8224 92-001, 108 Pages, 1992/03
no abstracts in English
; Iwamoto, K.
JAERI-M 5912, 20 Pages, 1974/12
no abstracts in English
Nagaishi, Ryuji; Ito, Tatsuya; Kuwano, Ryo*; Godo, Masao*; Yoshida, Yoichi*
no journal, ,
Since seawater has been used as emergency cooling water in the 1F accident, knowledge about radiolysis of seawater became important after the accident. In the experimental studies, simulated seawater and aqueous solutions containing halides have been used instead of seawater to elucidate individual events and phenomena and to obtain data. However, it has not been quantitatively clarified whether the radiolysis of seawater is reproduced as a whole. Therefore, in this study, in order to clarify the reproducibility from the initial process of radiolysis to the formation and reaction processes of final products, the transient absorption of radical products was observed using pulse radiolysis, and the molecular products hydrogen and hydrogen peroxide were measured by final product analysis. Based on these experimental results on the radiolysis of seawater, simulated seawater or an aqueous solution containing halides was compared with (natural) seawater.
