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146 results on '"Komori, Yukiko"'

1. Image reconstruction method for dual-isotope positron emission tomography

Author

Fukuchi, Tomonori, Shigeta, Mika, Haba, Hiromitsu, Mori, Daiki, Yokokita, Takuya, Komori, Yukiko, Yamamoto, Seiichi, and Watanabe, Yasuyoshi

Subjects
Physics - Medical Physics, Physics - Applied Physics
Abstract

We developed a positron emission tomography (PET) system for multiple-isotope imaging. Our PET system, named multiple-isotope PET (MI-PET), can distinguish between different tracer nuclides using coincidence measurement of prompt gamma-rays, which are emitted after positron emission. In MI-PET imaging with a pure positron emitter and prompt-gamma emitter, because of the imperfectness of prompt gamma-ray detection, an image for a pure positron emitter taken by MI-PET is superposed by a positron-{\gamma} emitter. Therefore, in order to make isolated images of the pure positron emitter, we developed image reconstruction methods based on data subtraction specific to MI-PET. We tested two methods, subtraction between reconstructed images and subtraction between sinogram data. In both methods, normalization for position dependence of the prompt {\gamma}-ray sensitivity is required in addition to detector sensitivity normalization. For these normalizations, we performed normalization scans using cylindrical phantoms of the positron-gamma emitters Sc-44m and Na-22. A long period measurement using the activity decay of Sc-44m (Half-life 58.6 hours) elucidated that the acquisition ratio between the prompt gamma-rays coincided with PET event and pure PET event changes on the basis of object activities. Therefore, we developed a correction method that involves subtraction parameters dependent on the activities, i.e., the counting rate. From analysis of dual-tracer phantom images, data subtraction in the sinogram data with sensitivity correction gives a higher quality of isolated images for the pure positron emitter than those from image subtractions. Furthermore, from dual-isotope (F-18-FDG and Sc-44m) mouse imaging, we concluded that our developed method can be used for practical imaging of a living organism., Comment: 17 pages, 12 figures

Published
2021
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4. Activation cross sections of \alpha-induced reactions on $^{nat}$Zn for Ge and Ga production

Author

Aikawa, Masayuki, Saito, Moemi, Ebata, Shuichiro, Komori, Yukiko, and Haba, Hiromitsu

Subjects
Nuclear Experiment
Abstract

The production cross sections of $^{68,69}$Ge and $^{66,67}$Ga by \alpha-induced reactions on $^{nat}$Zn have been measured using the stacked-foil activation method and off-line \gamma-ray spectrometry from their threshold energies to 50.7 MeV. The derived cross sections were compared with the previous experimental data and the calculated values in the TENLD-2017 library. Our result shows a slightly larger amplitude than the previous data at the peak, though the peak energy is consistent with them., Comment: 12 pages, 6 figures

Published
2018
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15. Co-precipitation behaviour of single atoms of rutherfordium in basic solutions

Author

Kasamatsu, Yoshitaka, Toyomura, Keigo, Haba, Hiromitsu, Yokokita, Takuya, Shigekawa, Yudai, Kino, Aiko, Yasuda, Yuki, Komori, Yukiko, Kanaya, Jumpei, Huang, Minghui, Murakami, Masashi, Kikunaga, Hidetoshi, Watanabe, Eisuke, Yoshimura, Takashi, Morita, Kosuke, Mitsugashira, Toshiaki, Takamiya, Koichi, Ohtsuki, Tsutomu, and Shinohara, Atsushi

Published
2021
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25. Incomplete fusion reaction producing Pa nuclides in the 232Th + 7Li reaction.

Author

Teranishi, Kakeru, Morita, Ryoga, Hayakawa, Yuta, Sakaguchi, Aya, Nakajima, Akihisa, Komori, Yukiko, Yokokita, Takuya, Mori, Daiki, Haba, Hiromitsu, and Yokoyama, Akihiko

Subjects
DEEP inelastic collisions, NUCLEAR fusion, NUCLIDES, EARTH sciences, NUCLEAR facilities, MASS spectrometry, ELECTRON beam furnaces
Abstract

The 237Np (t1/2 = 2.1 × 106 y) nuclide is produced in nuclear facilities. Its investigation is relevant to earth sciences as concerns environmental pollution and material circulation. We expected that this nuclide should be able to be analyzed by mass spectrometry with a neptunium tracer as a spike, such as that of 236gNp (t1/2 = 1.5 × 105 y). Our research group has collected fundamental data for cross-sections of the 232Th + 7Li reaction for use in spike production. In addition to the complete fusion reaction, incomplete fusion also occurs, especially in the reaction of 7Li, which splits into α and t, and only a part of the projectile fuses with the target nucleus. In this study, the excitation functions of Pa isotopes, as products of the incomplete fusion reaction, were measured. The reaction mechanism is discussed by comparing the experimental values with those calculated using the EMPIRE code. In addition, we investigated the effect of incomplete fusion reaction on the entire reaction. [ABSTRACT FROM AUTHOR]

Published
2023
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26. Probing Optimal Reaction Energy for Synthesis of Element 119 from 51V+248Cm Reaction with Quasielastic Barrier Distribution Measurement

Author

Tanaka, Masaomi, primary, Brionnet, Pierre, additional, Du, Miting, additional, Ezold, Julie, additional, Felker, Kevin, additional, Gall, Benoît J.P., additional, Go, Shintaro, additional, Grzywacz, Robert K., additional, Haba, Hiromitsu, additional, Hagino, Kouichi, additional, Hogle, Susan, additional, Ishizawa, Satoshi, additional, Kaji, Daiya, additional, Kimura, Sota, additional, King, Thomas T., additional, Komori, Yukiko, additional, Lemon, Raiden K., additional, Leonard, Milan G., additional, Morimoto, Kouji, additional, Morita, Kosuke, additional, Nagae, Daisuke, additional, Naito, Natsuki, additional, Niwase, Toshitaka, additional, Rasco, Bertis C., additional, Roberto, James B., additional, Rykaczewski, Krzysztof P., additional, Sakaguchi, Satoshi, additional, Sakai, Hideyuki, additional, Shigekawa, Yudai, additional, Stracener, Daniel W., additional, VanCleve, Shelley, additional, Wang, Yang, additional, Washiyama, Kouhei, additional, and Yokokita, Takuya, additional

Published
2022
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28. Incomplete fusion reaction producing Pa nuclides in the 232Th + 7Li reaction

Author

Teranishi, Kakeru, Morita, Ryoga, Hayakawa, Yuta, Sakaguchi, Aya, Nakajima, Akihisa, Komori, Yukiko, Yokokita, Takuya, Mori, Daiki, Haba, Hiromitsu, and Yokoyama, Akihiko

Abstract

The 237Np (t1/2= 2.1 × 106y) nuclide is produced in nuclear facilities. Its investigation is relevant to earth sciences as concerns environmental pollution and material circulation. We expected that this nuclide should be able to be analyzed by mass spectrometry with a neptunium tracer as a spike, such as that of 236gNp (t1/2= 1.5 × 105y). Our research group has collected fundamental data for cross-sections of the 232Th + 7Li reaction for use in spike production. In addition to the complete fusion reaction, incomplete fusion also occurs, especially in the reaction of 7Li, which splits into αand t, and only a part of the projectile fuses with the target nucleus. In this study, the excitation functions of Pa isotopes, as products of the incomplete fusion reaction, were measured. The reaction mechanism is discussed by comparing the experimental values with those calculated using the EMPIRE code. In addition, we investigated the effect of incomplete fusion reaction on the entire reaction.

Published
2023
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29. Guidelines for clinical evaluation of anti‐cancer drugs

Author

Minami, Hironobu, primary, Kiyota, Naomi, additional, Kimbara, Shiro, additional, Ando, Yuichi, additional, Shimokata, Tomoya, additional, Ohtsu, Atsushi, additional, Fuse, Nozomu, additional, Kuboki, Yasutoshi, additional, Shimizu, Toshio, additional, Yamamoto, Noboru, additional, Nishio, Kazuto, additional, Kawakami, Yutaka, additional, Nihira, Shin‐ichi, additional, Sase, Kazuhiro, additional, Nonaka, Takahiro, additional, Takahashi, Hideaki, additional, Komori, Yukiko, additional, and Kiyohara, Koshin, additional

Published
2021
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30. Stabilization of an 211At-Labeled Antibody with Sodium Ascorbate

Author

Manabe, Shino, primary, Takashima, Hiroki, additional, Ohnuki, Kazunobu, additional, Koga, Yoshikatsu, additional, Tsumura, Ryo, additional, Iwata, Nozomi, additional, Wang, Yang, additional, Yokokita, Takuya, additional, Komori, Yukiko, additional, Usuda, Sachiko, additional, Mori, Daiki, additional, Haba, Hiromitsu, additional, Fujii, Hirofumi, additional, Yasunaga, Masahiro, additional, and Matsumura, Yasuhiro, additional

Published
2021
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31. Production of Bh 266 in the Cm 248 (Na 23,5n) Bh 266 reaction and its decay properties

Author

Haba, H., Fan, F., Kaji, D., Kasamatsu, Y., Kikunaga, H., Komori, Yukiko, Kondo, N., Kudo, H., Morimoto, K., Morita, K., Murakami, M., Nishio, K., Omtvedt, Jon Petter, Ooe, K., Qin, Zhi, Sato, D., Sato, N., Sato, T.K., Shigekawa, Y., Shinohara, A., Takeyama, M., Tanaka, T., Toyoshima, A., Tsukada, Kazuaki, Wakabayashi, Y., Wang, Y., Wulff, Solveig Birgitte Aker, Yamaki, S., Yano, S., Yasuda, Y., and Yokokita, T.

Abstract

The nuclide 266Bh was produced in the 248Cm(23Na,5n)266Bh reaction at beam energies of 125.9, 130.6, and 135.3 MeV. Decay properties of 266Bh were investigated with a rotating wheel apparatus for α and spontaneous fission (SF) spectrometry under low background conditions attained by a gas-jet transport system coupled to the RIKEN gas-filled recoil ion separator. Based on genetically correlated α−α and α-SF decay chains, a total of 23 chains were assigned to 266Bh and its daughter nuclide 262Db and granddaughter 258Lr. The half-life of 266Bh was measured to be T1/2=10.0+2.6−1.7s which is an order of magnitude longer than the literature data. The α-particle energies of 266Bh disperse widely in the range of Eα=8.62–9.40MeV. The maximum production cross section for the 248Cm(23Na,5n)266Bh reaction was determined to be σ=57±14 pb at 130.6 MeV, whereas the upper limit for the 248Cm(23Na,4n)267Bh reaction was σ≤14 pb at 121.2 MeV. These cross sections are discussed by comparing with the literature data as well as the theoretical calculations.

Published
2020

32. Activation cross sections of alpha-induced reactions on Zn-nat for Ge and Ga production

Author

Aikawa, Masayuki, Saito, Moemi, Ebata, Shuichiro, Komori, Yukiko, and Haba, Hiromitsu

Subjects
Alpha particle irradiation, Cross section, Germanium-68, Zinc target, Excitation function
Abstract

The production cross sections of Ge-68,Ge-69 and Ga-66,Ga-67 by alpha-induced reactions on Zn-nat have been measured using the stacked-foil activation method and off-line gamma-ray spectrometry from their threshold energies to 50.7 MeV. The derived cross sections were compared with the previous experimental data and the calculated values in the TENLD-2017 library. Our result shows a slightly larger amplitude than the previous data at the peak, though the peak energy is consistent with them.

Published
2018

33. Activation cross sections of alpha-induced reactions on In-nat for Sn-117m production

Author

Aikawa, Masayuki, Saito, M., Ukon, Naoyuki, Komori, Yukiko, and Haba, Hiromitsu

Subjects
Alpha particle irradiation, Cross section, Indium target, Tin-117m, Excitation function
Abstract

The production of Sn-117m by charged-particle induced reactions is an interesting topic for medical application. Production cross sections of alpha-induced reactions on In-nat for Sn-117m up to 50 MeV were measured using the stacked foil technique and activation method. The integral yield of Sn-117m was estimated using the measured cross sections. The results were compared with experimental data investigated earlier and theoretical calculation. Measured cross sections for Sn-113 and Sb-116m,Sb-117,Sb-118m isotopes were also presented.

Published
2018

34. Radioimmunotherapy with an 211 At‐labeled anti–tissue factor antibody protected by sodium ascorbate

Author

Takashima, Hiroki, primary, Koga, Yoshikatsu, additional, Manabe, Shino, additional, Ohnuki, Kazunobu, additional, Tsumura, Ryo, additional, Anzai, Takahiro, additional, Iwata, Nozomi, additional, Wang, Yang, additional, Yokokita, Takuya, additional, Komori, Yukiko, additional, Mori, Daiki, additional, Usuda, Sachiko, additional, Haba, Hiromitsu, additional, Fujii, Hirofumi, additional, Matsumura, Yasuhiro, additional, and Yasunaga, Masahiro, additional

Published
2021
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35. Paroxysmal nocturnal hemoglobinuria complicated with essential thrombocythemia harboring concomitant PIGA, CALR, and ASXL1 mutations

Author

Okamoto, Haruya, primary, Uoshima, Nobuhiko, additional, Kamitsuji, Yuri, additional, Kawata, Eri, additional, Komori, Yukiko, additional, Sasaki, Nana, additional, Tsutsumi, Yasuhiko, additional, Tsukamoto, Taku, additional, Mizutani, Shinsuke, additional, Nannya, Yasuhito, additional, and Kuroda, Junya, additional

Published
2021
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36. Durable Remission of Chemotherapy-Refractory Myeloid Sarcoma by Azacitidine

Author

Okamoto, Haruya, primary, Kamitsuji, Yuri, additional, Komori, Yukiko, additional, Sasaki, Nana, additional, Tsutsumi, Yasuhiko, additional, Miyashita, Akihiro, additional, Tsukamoto, Taku, additional, Mizutani, Shinsuke, additional, Shimura, Yuji, additional, Kobayashi, Tsutomu, additional, Uoshima, Nobuhiko, additional, and Kuroda, Junya, additional

Published
2021
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37. Abstract 2863: Preclinical evaluation of astatine-211-conjugated anti-tissue factor antibody

Author

Takashima, Hiroki, primary, Koga, Yoshikatsu, additional, Onuki, Kazunobu, additional, Manabe, Shino, additional, Tsumura, Ryo, additional, Anzai, Takahiro, additional, Iwata, Nozomi, additional, Yasunaga, Masahiro, additional, Yang, Wang, additional, Yokokita, Takuya, additional, Komori, Yukiko, additional, Mori, Daiki, additional, Haba, Hiromitsu, additional, Fujii, Hirofumi, additional, and Matsumura, Yasuhiro, additional

Published
2020
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38. Solvent Extraction of Zr and Hf from HCl by Aliquat 336 using a Flow-Type Extraction Apparatus Toward Online Chemical Studies of Element 104, Rutherfordium

Author

Kasamatsu, Yoshitaka, primary, Kondo, Narumi, additional, Nakamura, Kouhei, additional, Kuboki, Yuki, additional, Ninomiya, Hidemi, additional, Shigekawa, Yudai, additional, Watanabe, Eisuke, additional, Yasuda, Yuki, additional, Toyomura, Keigo, additional, Nagase, Masahiro, additional, Yokokita, Takuya, additional, Komori, Yukiko, additional, Haba, Hiromitsu, additional, Yoshimura, Takashi, additional, Itabashi, Hideyuki, additional, and Shinohara, Atsushi, additional

Published
2020
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39. Anion- and cation-exchange studies of Zr, Hf, and Th using ion-exchange resin and fiber in H2SO4 media for chemical characterization of sulfate complex of Rf.

Author

Yokokita, Takuya, Yano, Shinya, Komori, Yukiko, and Haba, Hiromitsu

Subjects
ION exchange (Chemistry), EXTRACTION apparatus, SULFATES, THORIUM, FIBERS, SULFURIC acid
Abstract

To investigate sulfate complex formation of Rf, we performed batch-wise ion-exchange experiments of its homologues Zr and Hf and its pseudo homologue Th in H2SO4 using anion- and cation-exchange resins and fibers. From the time dependence of the distribution ratios, it was found that the anion-exchange resin is applicable for the experiments with the 261Rfa. To obtain the comparison data for Rf, we investigated the distribution coefficients of Zr, Hf, and Th in 0.06–1 M H2SO4. From these results, we propose the anion-exchange experiments of Rf with the resin in 0.1–0.7 M H2SO4 using the extraction apparatus (AMBER). [ABSTRACT FROM AUTHOR]

Published
2022
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40. Activation cross sections of ��-induced reactions on $^{nat}$Zn for Ge and Ga production

Author

Aikawa, Masayuki, Saito, Moemi, Ebata, Shuichiro, Komori, Yukiko, and Haba, Hiromitsu

Subjects
FOS: Physical sciences, Nuclear Experiment (nucl-ex)
Abstract

The production cross sections of $^{68,69}$Ge and $^{66,67}$Ga by ��-induced reactions on $^{nat}$Zn have been measured using the stacked-foil activation method and off-line ��-ray spectrometry from their threshold energies to 50.7 MeV. The derived cross sections were compared with the previous experimental data and the calculated values in the TENLD-2017 library. Our result shows a slightly larger amplitude than the previous data at the peak, though the peak energy is consistent with them., 12 pages, 6 figures

Published
2018
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41. The study of rhenium pentacarbonyl complexes using single-atom chemistry in the gas phase

Author

Wang, Yang, primary, Cao, Shiwei, additional, Zhang, Jicai, additional, Fan, Fangli, additional, Yang, Jie, additional, Haba, Hiromitsu, additional, Komori, Yukiko, additional, Yokokita, Takuya, additional, Morimoto, Kouji, additional, Kaji, Daiya, additional, Wittwer, Yves, additional, Eichler, Robert, additional, Türler, Andreas, additional, and Qin, Zhi, additional

Published
2019
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43. Radioimmunotherapy with an 211At‐labeled anti–tissue factor antibody protected by sodium ascorbate.

Author

Takashima, Hiroki, Koga, Yoshikatsu, Manabe, Shino, Ohnuki, Kazunobu, Tsumura, Ryo, Anzai, Takahiro, Iwata, Nozomi, Wang, Yang, Yokokita, Takuya, Komori, Yukiko, Mori, Daiki, Usuda, Sachiko, Haba, Hiromitsu, Fujii, Hirofumi, Matsumura, Yasuhiro, and Yasunaga, Masahiro

Abstract

Tissue factor (TF), the trigger protein of the extrinsic blood coagulation cascade, is abundantly expressed in various cancers including gastric cancer. Anti‐TF monoclonal antibodies (mAbs) capable of targeting cancers have been successfully applied to armed antibodies such as antibody‐drug conjugates (ADCs) and molecular imaging probes. We prepared an anti‐TF mAb, clone 1084, labeled with astatine‐211 (211At), as a promising alpha emitter for cancer treatment. Alpha particles are characterized by high linear energy transfer and a range of 50‐100 µm in tissue. Therefore, selective and efficient tumor accumulation of alpha emitters results in potent antitumor activities against cancer cells with minor effects on normal cells adjacent to the tumor. Although the 211At‐conjugated clone 1084 (211At‐anti‐TF mAb) was disrupted by an 211At‐induced radiochemical reaction, we demonstrated that astatinated anti‐TF mAbs eluted in 0.6% or 1.2% sodium ascorbate (SA) solution were protected from antibody denaturation, which contributed to the maintenance of cellular binding activities and cytocidal effects of this immunoconjugate. Although body weight loss was observed in mice administered a 1.2% SA solution, the loss was transient and the radioprotectant seemed to be tolerable in vivo. In a high TF–expressing gastric cancer xenograft model, 211At‐anti‐TF mAb in 1.2% SA exerted a significantly greater antitumor effect than nonprotected 211At‐anti‐TF mAb. Moreover, the antitumor activities of the protected immunoconjugate in gastric cancer xenograft models were dependent on the level of TF in cancer cells. These findings suggest the clinical availability of the radioprotectant and applicability of clone 1084 to 211At‐radioimmunotherapy. [ABSTRACT FROM AUTHOR]

Published
2021
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44. Activation cross sections of alpha-induced reactions on Zn-nat for Ge and Ga production

Author

1000000374736, Aikawa, Masayuki, Saito, Moemi, Ebata, Shuichiro, Komori, Yukiko, Haba, Hiromitsu, 1000000374736, Aikawa, Masayuki, Saito, Moemi, Ebata, Shuichiro, Komori, Yukiko, and Haba, Hiromitsu

Abstract

The production cross sections of Ge-68,Ge-69 and Ga-66,Ga-67 by alpha-induced reactions on Zn-nat have been measured using the stacked-foil activation method and off-line gamma-ray spectrometry from their threshold energies to 50.7 MeV. The derived cross sections were compared with the previous experimental data and the calculated values in the TENLD-2017 library. Our result shows a slightly larger amplitude than the previous data at the peak, though the peak energy is consistent with them.

Published
2018

46. Online chemical adsorption studies of Hg, Tl, and Pb on SiO2 and Au surfaces in preparation for chemical investigations on Cn, Nh, and Fl at TASCA

Author

Lens, Lotte, primary, Yakushev, Alexander, additional, Düllmann, Christoph Emanuel, additional, Asai, Masato, additional, Ballof, Jochen, additional, Block, Michael, additional, David, Helena May, additional, Despotopulos, John, additional, Di Nitto, Antonio, additional, Eberhardt, Klaus, additional, Even, Julia, additional, Götz, Michael, additional, Götz, Stefan, additional, Haba, Hiromitsu, additional, Harkness-Brennan, Laura, additional, Heßberger, Fritz Peter, additional, Herzberg, Rodi D., additional, Hoffmann, Jan, additional, Hübner, Annett, additional, Jäger, Egon, additional, Judson, Daniel, additional, Khuyagbaatar, Jadambaa, additional, Kindler, Birgit, additional, Komori, Yukiko, additional, Konki, Joonas, additional, Kratz, Jens Volker, additional, Krier, Jörg, additional, Kurz, Nikolaus, additional, Laatiaoui, Mustapha, additional, Lahiri, Susanta, additional, Lommel, Bettina, additional, Maiti, Moumita, additional, Mistry, Andrew K., additional, Mokry, Christoph, additional, Moody, Ken, additional, Nagame, Yuichiro, additional, Omtvedt, Jon Petter, additional, Papadakis, Philippos, additional, Pershina, Valeria, additional, Runke, Jörg, additional, Schädel, Matthias, additional, Scharrer, Paul, additional, Sato, Tetsuya, additional, Shaughnessy, Dawn, additional, Schausten, Brigitta, additional, Thörle-Pospiech, Petra, additional, Trautmann, Norbert, additional, Tsukada, Kazuaki, additional, Uusitalo, Juha, additional, Ward, Andrew, additional, Wegrzecki, Maciej, additional, Wiehl, Norbert, additional, and Yakusheva, Vera, additional

Published
2018
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47. Determination of Fusion Barrier Distributions from Quasielastic Scattering Cross Sections towards Superheavy Nuclei Synthesis

Author

Tanaka, Taiki, primary, Narikiyo, Yoshihiro, additional, Morita, Kosuke, additional, Fujita, Kunihiro, additional, Kaji, Daiya, additional, Morimoto, Kouji, additional, Yamaki, Sayaka, additional, Wakabayashi, Yasuo, additional, Tanaka, Kengo, additional, Takeyama, Mirei, additional, Yoneda, Akira, additional, Haba, Hiromitsu, additional, Komori, Yukiko, additional, Yanou, Shinya, additional, Gall, Benoît Jean-Paul, additional, Asfari, Zouhair, additional, Faure, Hugo, additional, Hasebe, Hiroo, additional, Huang, Minghui, additional, Kanaya, Jumpei, additional, Murakami, Masashi, additional, Yoshida, Atsushi, additional, Yamaguchi, Takayuki, additional, Tokanai, Fuyuki, additional, Yoshida, Tomomi, additional, Yamamoto, Shoya, additional, Yamano, Yuki, additional, Watanabe, Kenyu, additional, Ishizawa, Satoshi, additional, Asai, Masato, additional, Aono, Ryuji, additional, Goto, Shin-ichi, additional, Katori, Kenji, additional, and Hagino, Kouichi, additional

Published
2018
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49. Study of the Reaction48Ca +248Cm →296Lv*at RIKEN-GARIS

Author

Kaji, Daiya, primary, Morita, Kosuke, additional, Morimoto, Kouji, additional, Haba, Hiromitsu, additional, Asai, Masato, additional, Fujita, Kunihiro, additional, Gan, Zaiguo, additional, Geissel, Hans, additional, Hasebe, Hiroo, additional, Hofmann, Sigurd, additional, Huang, MingHui, additional, Komori, Yukiko, additional, Ma, Long, additional, Maurer, Joachim, additional, Murakami, Masashi, additional, Takeyama, Mirei, additional, Tokanai, Fuyuki, additional, Tanaka, Taiki, additional, Wakabayashi, Yasuo, additional, Yamaguchi, Takayuki, additional, Yamaki, Sayaka, additional, and Yoshida, Atsushi, additional

Published
2017
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50. Extraction behavior of rutherfordium as a cationic fluoride complex with a TTA chelate extractant from HF/HNO3 acidic solutions.

Author

Yokoyama, Akihiko, Kitayama, Yuta, Fukuda, Yoshiki, Kikunaga, Hidetoshi, Murakami, Masashi, Komori, Yukiko, Yano, Shinya, Haba, Hiromitsu, Tsukada, Kazuaki, and Toyoshima, Atsushi

Subjects
RUTHERFORDIUM, CHELATES, STATIONARY phase (Chromatography), CHROMATOGRAPHIC analysis, ADSORPTION (Chemistry)
Abstract

The aim of this study was to identify relevant Rf chemical species by using reversed-phase extraction chromatography with 2-thenoyltrifluoroacetone (TTA) resin as the stationary phase. Because TTA can be used to extract specific metal ions, the distribution ratios of the system enabled determination of the specific complex formation constant of Rf. We performed several experiments on chemical systems with Zr, Hf, No, and Rf, determined their adsorption coefficients, and deduced the Kd values for Rf. [ABSTRACT FROM AUTHOR]

Published
2019
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