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Journal Articles

Stoichiometry of lanthanide-phosphate complexes at the water surface studied using vibrational sum frequency generation spectroscopy and DFT calculations

Kusaka, Ryoji; Watanabe, Masayuki

Journal of Physical Chemistry B, 125(24), p.6727 - 6731, 2021/06

 Times Cited Count:0 Percentile:0(Chemistry, Physical)

Journal Articles

Improvement in flow-sheet of extraction chromatography for trivalent minor actinides recovery

Watanabe, So; Senzaki, Tatsuya; Shibata, Atsuhiro; Nomura, Kazunori; Takeuchi, Masayuki; Nakatani, Kiyoharu*; Matsuura, Haruaki*; Horiuchi, Yusuke*; Arai, Tsuyoshi*

Journal of Radioanalytical and Nuclear Chemistry, 322(3), p.1273 - 1277, 2019/12

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

Journal Articles

Flow-sheet study of MA recovery by extraction chromatography for SmART cycle project

Watanabe, So; Nomura, Kazunori; Kitawaki, Shinichi; Shibata, Atsuhiro; Kofuji, Hirohide; Sano, Yuichi; Takeuchi, Masayuki

Procedia Chemistry, 21, p.101 - 108, 2016/12

BB2015-3215.pdf:0.34MB

 Times Cited Count:7 Percentile:98.45

Journal Articles

Preparation of an extractant-impregnated porous membrane for the high-speed separation of a metal ion

Asai, Shiho; Watanabe, Kazuo; Sugo, Takanobu*; Saito, Kyoichi*

Journal of Chromatography A, 1094(1-2), p.158 - 164, 2005/11

 Times Cited Count:22 Percentile:56.09(Biochemical Research Methods)

The analysis of radioactive species in radioactive wastes is essential to the safe and economical disposal of such wastes. Among radioactive species, alpha- and beta-emitting nuclides should be purified prior to various radiometric determinations. To overcome the disadvantages of the conventional separation techniques, we have proposed functional porous hollow-fiber membranes that achieve a high speed operation assisted by convective flow. Stable immobilization in aqueous media is ensured by the hydrophobic interaction between the hydrophobic moiety of the extractant and octadecyl part of octadecylamino group. In this study, HDEHP, which shows the selectivity for rare earth elements, such as yttrium, was immobilized onto the porous membrane. The amount of immobilized HDEHP increased with increasing molar conversion. This can be explained by the fact that an increase in the C$$_{18}$$NH group allows the polymer brush to extend itself due to electrostatic repulsion originating from the amino part of the C$$_{18}$$NH group.

Journal Articles

Back-extraction of tri- and tetravalent actinides from diisodecylphosphoric acid (DIDPA) with hydrazine carbonate

Watanabe, Masayuki; Tatsugae, Ryozo*; Morita, Yasuji; Kubota, Masumitsu*

Journal of Radioanalytical and Nuclear Chemistry, 252(1), p.53 - 57, 2002/04

 Times Cited Count:5 Percentile:35.97(Chemistry, Analytical)

no abstracts in English

JAEA Reports

Production of $$^{139}$$Ce by the $$^{139}$$La(p,n)$$^{139}$$Ce reaction

Ishioka, Noriko; Izumo, Mishiroku; Hashimoto, Kazuyuki; Kobayashi, Katsutoshi; Matsuoka, Hiromitsu; Sekine, Toshiaki

JAERI-Tech 2001-095, 23 Pages, 2002/01

JAERI-Tech-2001-095.pdf:1.1MB

no abstracts in English

Journal Articles

Back-extraction of uranium(VI) from organophosphoric acid with hydrazine carbonate

Watanabe, Masayuki; Tatsugae, Ryozo*; Shirahashi, Koichi; Morita, Yasuji; Kubota, Masumitsu*

Journal of Radioanalytical and Nuclear Chemistry, 250(2), p.377 - 379, 2001/11

 Times Cited Count:5 Percentile:40.34(Chemistry, Analytical)

no abstracts in English

JAEA Reports

Development of partitioning process; Back-extraction of actinoid and lanthanoid with hydrazine carbonate

Watanabe, Masayuki; Tatsugae, Ryozo*; *; Morita, Yasuji; Kubota, Masumitsu

JAERI-Research 99-034, 55 Pages, 1999/05

JAERI-Research-99-034.pdf:1.7MB

no abstracts in English

Journal Articles

Back-extraction of tri- and tetravalent actinides from Di(2-ethylhexyl)phosphoric acid (HDEHP) with hydrozine carbonate

Watanabe, Masayuki; Morita, Yasuji; Kubota, Masumitsu*; Tatsugae, Ryozo*

Radiochimica Acta, 87(3-4), p.115 - 119, 1999/00

no abstracts in English

Journal Articles

Characteristics of centrifugal partition chromatography for lanthanoid separation in HDEHP extraction system

Abe, Hitoshi; Usuda, Shigekazu; Tachimori, Shoichi

J. Liquid Chromatogr., 17(8), p.1821 - 1835, 1994/00

no abstracts in English

Journal Articles

Calculation of Distribution Ratios of Rare Earth Elements in multistage counter current Extraction with HDEHP

; ;

Journal of Nuclear Science and Technology, 15(11), p.829 - 834, 1978/00

 Times Cited Count:0

no abstracts in English

Journal Articles

Separation of plutonium-238 from fission products by solvent extraction using HDEHP

Journal of Nuclear Science and Technology, 10(11), p.696 - 699, 1973/11

no abstracts in English

Journal Articles

Separation of Plutonium and Curium from Irradiated Americium by Solvent Extraction using HDEHP

;

Nihon Genshiryoku Gakkai-Shi, 14(7), p.326 - 327, 1972/00

no abstracts in English

Oral presentation

Basic study on new separation technology of Mo (VI) and Zr (IV) using oil adsorption sheet

Abe, Ryoji*; Arai, Tsuyoshi*; Watanabe, So; Sano, Yuichi; Takeuchi, Masayuki

no journal, , 

no abstracts in English

Oral presentation

Adsorption and elution mechanism of Nd(III) by adsorbent with CMPO-HDEHP mixture

Sakurai, Tomoaki*; Nagoshi, Kohei*; Arai, Tsuyoshi*; Watanabe, So; Sano, Yuichi; Takeuchi, Masayuki

no journal, , 

no abstracts in English

Oral presentation

Optimization in flow-sheet of extraction chromatography with CMPO and HDEHP impregnated adsorbents

Watanabe, So; Senzaki, Tatsuya; Shibata, Atsuhiro; Nomura, Kazunori; Nakatani, Kiyoharu*; Horiuchi, Yusuke*; Arai, Tsuyoshi*; Matsuura, Haruaki*

no journal, , 

no abstracts in English

Oral presentation

Improvement in flow-sheet of extraction chromatography for trivalent minor actinides recovery

Watanabe, So; Senzaki, Tatsuya; Shibata, Atsuhiro; Nomura, Kazunori; Takeuchi, Masayuki; Nakatani, Kiyoharu*; Matsuura, Haruaki*; Horiuchi, Yusuke*; Arai, Tsuyoshi*

no journal, , 

no abstracts in English

Oral presentation

Optimization of chromatography method for an advancement of trace analysis of $$^{151}$$Sm

Yoshida, Masaaki*; Arai, Tsuyoshi*; Matsushima, Ryotatsu; Saito, Yasuo

no journal, , 

no abstracts in English

18 (Records 1-18 displayed on this page)
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