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Journal Articles

Quantitative imaging method of metallic lithium surface density using muonic X-rays

Takeda, Shinichiro*; Katsuragawa, Miho*; Takahashi, Tadayuki*; Watanabe, Shin*; Chiu, I.-H.; Ninomiya, Kazuhiko*; Arai, Toshihiko*; Onishi, Mitsunobu*; Tampo, Motonobu*; Shimomura, Koichiro*; et al.

Analytical Chemistry, 98(24), p.17618 - 17626, 2026/06

https://doi.org/10.1021/acs.analchem.5c06781
 Times Cited Count：0 Percentile：0.00(Chemistry, Analytical)

Journal Articles

Synthesis of plutonium trichloride and measurement of redox potentials for the Pu$$^{3+}$$/Pu$$^{0}$$ couple in NaCl-2CsCl melt

Hayashi, Hirokazu; Minato, Kazuo*

Journal of Radioanalytical and Nuclear Chemistry, 335(6), p.4233 - 4240, 2026/06

https://doi.org/10.1007/s10967-026-10920-1
 Times Cited Count：0 Percentile：0.00(Chemistry, Analytical)

Anhydrous plutonium trichloride (PuCl$$_3$$) was synthesized by a solid-state reaction of plutonium nitride with cadmium chloride. The lattice constants of hexagonal PuCl$$_3$$ were refined from its powder X-ray diffraction pattern to be a = 0.7394 $$pm$$ 0.0006 nm and c = 0.4244 $$pm$$ 0.0006 nm, which are close to the reported values. Using the synthesized PuCl$$_3$$ sample, electrochemical behavior of plutonium in NaCl-2CsCl melt at 823-923 K was investigated by cyclic voltammetry and open-circuit chronopotentiometry after polarization. The results show that Pu$$^{3+}$$ ions are reduced to Pu metal by single-step mechanism in the NaCl-2CsCl melt. The apparent standard potentials of Pu$$^{3+}$$/Pu$$^{0}$$ redox couple were determined to be E$$^{*}$$(Pu$$^{3+}$$/Pu$$^{0}$$) = -3.514 + 8.60$$times$$10$$^{-4}$$ T vs. Cl$$_2$$/Cl$$^-$$ (V). The activity coefficients of Pu$$^{3+}$$ ions were determined using the previously reported Gibbs free energy of formation for PuCl$$_3$$ in the supercooled liquid state.

Journal Articles

Automated flow electrolysis coupled with solid-phase extraction and ICP-MS/MS for rapid determination of neptunium-237

Yanagisawa, Kayo; Matsueda, Makoto; Oka, Toshitaka; Kitatsuji, Yoshihiro

Journal of Radioanalytical and Nuclear Chemistry, 335(3), p.2091 - 2100, 2026/03

https://doi.org/10.1007/s10967-025-10607-z
 Times Cited Count：0 Percentile：0.00(Chemistry, Analytical)

Journal Articles

Facile preparation of antiviral grafted fabrics based on silver-immobilized phosphate groups and evaluation of COVID-19 infections

Matsumura, Daiju; Tsuji, Takuya; Seko, Noriaki*; 5 of others*

Journal of Radioanalytical and Nuclear Chemistry, 335(2), p.1543 - 1552, 2026/02

https://doi.org/10.1007/s10967-025-10608-y
 Times Cited Count：0 Percentile：0.00(Chemistry, Analytical)

Journal Articles

Development of HCl-free solid-phase extraction combined with ICP-MS/MS for rapid assessment of difficult-to-measure radionuclides, 4; Rapid determination of $$^{107}$$Pd in concrete rubble

Ota, Yuki; Do, V.-K.; Banjarnahor, I. M.; Iwahashi, Hiroyuki; Furuse, Takahiro; Tanaka, Kosuke

Journal of Radioanalytical and Nuclear Chemistry, 335(1), p.939 - 948, 2026/02

https://doi.org/10.1007/s10967-026-10735-0
 Times Cited Count：0 Percentile：0.00(Chemistry, Analytical)

Journal Articles

The pH dependence of the oxidation state and coordination structure of Fe in mediator-assisted electrochemically reduced nontronite

Morii, Shiori; Yomogida, Takumi; Nakada, Masami; Oka, Toshitaka; Kitatsuji, Yoshihiro; Takahashi, Yoshio*

Journal of Radioanalytical and Nuclear Chemistry, 8 Pages, 2026/00

https://doi.org/10.1007/s10967-026-11114-5

Journal Articles

Isotope-specific quantitative mapping of $$^{90}$$Sr at subfemtogram levels via online isotope dilution and laser ablation inductively coupled plasma tandem mass spectrometry

Yanagisawa, Kayo; Matsueda, Makoto; Furukawa, Makoto*; Takagai, Yoshitaka*

Analytical Chemistry, 97(50), p.27980 - 27987, 2025/11

https://doi.org/10.1021/acs.analchem.5c05652
 Times Cited Count：1 Percentile：0.00(Chemistry, Analytical)

Journal Articles

Actinide separation by column method using polyvinylpolypyrrolidone

Wada, Kazuma*; Kazama, Hiroyuki*; Abe, Chikage*; Onishi, Takashi; Yamamoto, Masahiko; Taguchi, Shigeo; Kuno, Takehiko; Maeda, Koji; Idemitsu, Kazuya*; Suzuki, Tatsuya*

Journal of Radioanalytical and Nuclear Chemistry, 334(11), p.8961 - 8968, 2025/11

https://doi.org/10.1007/s10967-025-10539-8
 Times Cited Count：0 Percentile：0.00(Chemistry, Analytical)

The feasibility of using commercially available polyvinylpolypyrrolidone (PVPP) as a pretreatment for mass spectrometry to separate actinides was investigated. Uranium, thorium, and plutonium were used as actinides in the study. Adsorption data for An(IV) and An(VI) were obtained by adsorption experiments in nitric acid. In addition, An(III)/An(IV)/An(VI) mutual separation was successfully performed by a column separation method using PVPP. Furthermore, the elution efficiency of U(VI) was improved by the introduction of carbonate ions. This method may be applicable as a mutual separation for actinide mass spectrometry.

Journal Articles

Distribution of cesium-bearing microparticles in the paddy field and their effect on transfer factor of radioactive cesium for brown rice

Tatsuno, Takahiro*; Nihei, Naoto*; Yoshimura, Kazuya

Journal of Radioanalytical and Nuclear Chemistry, 334(8), p.5719 - 5727, 2025/08

https://doi.org/10.1007/s10967-025-10312-x
 Times Cited Count：0 Percentile：0.00(Chemistry, Analytical)

Journal Articles

A New analytical technique utilizing the PdI$$_{2}$$ target for measurement of $$^{129}$$I in environmental samples by accelerator mass spectrometry

Honda, Maki; Takaku, Yuichi*; Sakaguchi, Aya*; Matsuzaki, Hiroyuki*; Sueki, Keisuke*

Journal of Radioanalytical and Nuclear Chemistry, 334(8), p.5809 - 5820, 2025/08

https://doi.org/10.1007/s10967-025-10324-7
 Times Cited Count：0 Percentile：0.00(Chemistry, Analytical)

A series of in-house PdI$$_{2}$$ standards appropriate for AMS was prepared by quantitatively mixing the $$^{129}$$I/$$^{127}$$I isotope standard solution and $$^{127}$$I solution. The dominant interferences from $$^{104, 105}$$Pd $$^{4+}$$ were successfully suppressed by adjusting the electrostatic cylindrical analyser, etc., to select the ion beams finely. As a result, the $$^{129}$$I/$$^{127}$$I atom ratios of PdI$$_{2}$$ prepared from the seawater and dolomite samples agreed with those prepared as AgI, respectively. The pretreatment time for the new method was shortened by 33% compared to the conventional method. This study demonstrated a new approach to $$^{129}$$I analysis in AMS that departs from conventional methods.

Journal Articles

Assessment of suspended sediment and $$^{137}$$Cs sources during the flood event in the Fukushima river using $$^{13}$$C and $$^{14}$$C

Nakanishi, Takahiro; Tsuruta, Tadahiko; Funaki, Hironori

Journal of Radioanalytical and Nuclear Chemistry, 334(7), p.5101 - 5107, 2025/07

https://doi.org/10.1007/s10967-025-10253-5
 Times Cited Count：2 Percentile：61.39(Chemistry, Analytical)

In this study, the radiocarbon isotope ratio, $$Delta$$$$^{14}$$C, was used to identify the sources of suspended sediment and $$^{137}$$Cs discharged into rivers after the Fukushima nuclear accident. Suspended sediments were collected during the flood event and under normal water conditions to determine $$^{137}$$Cs concentrations, $$Delta$$$$^{14}$$C, and stable carbon isotope ratios. The results indicated that the contribution of forest surface soil runoff increased during the flood peak. Furthermore, the distribution of $$^{137}$$Cs deposition in the watershed was reflected in temporal changes in suspended $$^{137}$$Cs concentration during the flood event. This approach provides a comprehensive understanding of both $$^{137}$$Cs and carbon dynamics.

Journal Articles

Development of HCl-free solid-phase extraction combined with ICP-MS/MS for rapid assessment of difficult-to-measure radionuclides, 3; Measurement of $$^{79}$$Se concentration in concrete rubble

Banjarnahor, I. M.; Do, V.-K.; Furuse, Takahiro; Ota, Yuki; Tanaka, Kosuke

Journal of Radioanalytical and Nuclear Chemistry, 334(7), p.4997 - 5006, 2025/05

https://doi.org/10.1007/s10967-025-10143-w
 Times Cited Count：3 Percentile：61.39(Chemistry, Analytical)

Journal Articles

Solvent extraction of tin in nitric acids; Evaluation of multiple extractants

Ito, Kengo*; Takahashi, Shin*; Kato, Chizu*; Fukutani, Satoshi*; Matsumura, Tatsuro; Fujii, Toshiyuki*

Journal of Radioanalytical and Nuclear Chemistry, 334, p.2467 - 2475, 2025/02

https://doi.org/10.1007/s10967-025-10003-7
 Times Cited Count：0 Percentile：0.00(Chemistry, Analytical)

In this study, the solvent extraction behavior of tin (Sn), specifically $$^{126}$$Sn, from high-level radioactive waste was evaluated using six different extractants in a HNO$$_{3}$$ system. Among the tested extractants, N,N-Didodecyl-2-hydroxyacetoamide (HAA) exhibited higher efficiency, still not sufficient for industrial implementation. In systems where HCl was added to HNO$$_{3}$$, both tributyl phosphate (TBP) and N,N,N,N'-tetra-2-ethylhexyl diglycolamide (TEHDGA) achieved D$$_{Sn}$$ values greater than 1 at $$>$$ 1 M HCl. However, due to practical challenges in industrial applications, HAA extraction in HNO$$_{3}$$ systems, particularly at low Sn concentrations (0.0008 M), may provide a more effective solution for Sn recovery.

Journal Articles

Development of Cs separation methods from large amounts of soil samples to determine the $$^{135}$$Cs/$$^{137}$$Cs isotope ratio

Shimada, Asako; Tsukahara, Takehiko*; Nomura, Masao*; Takeda, Seiji

Journal of Radioanalytical and Nuclear Chemistry, 333(12), p.6297 - 6310, 2024/12

https://doi.org/10.1007/s10967-024-09749-3
 Times Cited Count：2 Percentile：34.48(Chemistry, Analytical)

Journal Articles

Solvent extraction of selenium in nitric acid; Evaluation of multiple extractants and proposal of a novel separation process

Ito, Kengo*; Kawakami, Takahiro*; Kato, Chizu*; Fukutani, Satoshi*; Matsumura, Tatsuro; Fujii, Toshiyuki*

Journal of Radioanalytical and Nuclear Chemistry, 333(10), p.5183 - 5189, 2024/10

https://doi.org/10.1007/s10967-024-09681-6
 Times Cited Count：2 Percentile：16.94(Chemistry, Analytical)

Solvent extraction behaviors of Se (VI) from nitric acid solutions were investigated with multiple extractants used for uranium, plutonium, minor actinides, and rare earthelements separation processes from high-level liquid waste. During the processes, Se remained in the residual aqueous solutions, as all extractants showed distributionratios $$<$$ 1. In contrast, Se showed distribution ratios $$>$$ 1 with $$o$$-phenylenediamine in dilute nitric acid ($$<$$ 2 M HNO$$_{3}$$), octanol as the organic phase, and concentrated nitric acid (8 M HNO$$_{3}$$) for back extraction, suggesting a potential new single separation process and recovery of Se.

Journal Articles

Investigation of adsorption mechanism of Mo(VI) by baker's yeast and applicability to the uranium liquid waste treatment process

Arai, Yoichi; Hasegawa, Kenta; Watanabe, So; Watanabe, Masayuki; Minowa, Kazuki*; Matsuura, Haruaki*; Hagura, Naoto*; Katsuki, Kenta*; Arai, Tsuyoshi*; Konishi, Yasuhiro*

Journal of Radioanalytical and Nuclear Chemistry, 333(7), p.3585 - 3593, 2024/07

https://doi.org/10.1007/s10967-023-09278-5
 Times Cited Count：1 Percentile：11.16(Chemistry, Analytical)

Journal Articles

Development of a non-destructive carbon quantification method in iron by negative muon lifetime measurement

Ninomiya, Kazuhiko*; Kubo, Kenya*; Inagaki, Makoto*; Yoshida, Go*; Takeshita, Soshi*; Tampo, Motonobu*; Shimomura, Koichiro*; Kawamura, Naritoshi*; Strasser, P.*; Miyake, Yasuhiro*; et al.

Journal of Radioanalytical and Nuclear Chemistry, 333(7), p.3445 - 3450, 2024/07

https://doi.org/10.1007/s10967-023-09289-2
 Times Cited Count：1 Percentile：16.94(Chemistry, Analytical)

Journal Articles

Application of deep metric learning model to microscope image analysis for the determination of UOC samples in nuclear forensics analysis

Kimura, Yoshiki; Matsumoto, Tetsuya*; Yamaguchi, Tomoki

Journal of Radioanalytical and Nuclear Chemistry, 333(7), p.3541 - 3551, 2024/07

https://doi.org/10.1007/s10967-023-09300-w
 Times Cited Count：1 Percentile：16.94(Chemistry, Analytical)

Journal Articles

Development of a process for the separation of MA(III) from Ln(III) fission products using HONTA impregnated adsorbent

Kubota, Masahiko*; Kim, S.-Y.*; Wu, H.*; Watanabe, So; Sano, Yuichi; Takeuchi, Masayuki; Arai, Tsuyoshi*

Journal of Radioanalytical and Nuclear Chemistry, 333(5), p.2413 - 2420, 2024/05

https://doi.org/10.1007/s10967-024-09471-0
 Times Cited Count：5 Percentile：68.78(Chemistry, Analytical)

Journal Articles

Water extraction of technetium-99m from neutron irradiated porous molybdenum dioxide pellet

Hu, X.*; Fujita, Yoshitaka; Tsuchiya, Kunihiko; Fukutani, Satoshi*; Hori, Junichi*; Suzuki, Tatsuya*

Journal of Radioanalytical and Nuclear Chemistry, 333(11), p.6057 - 6063, 2024/05

https://doi.org/10.1007/s10967-024-09529-z
 Times Cited Count：0 Percentile：0.00(Chemistry, Analytical)

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365 (Records 1-20 displayed on this page)