2024/05/02 更新

写真a

ハシグチ ミナコ
橋口 未奈子
HASHIGUCHI Minako
所属
大学院環境学研究科 地球環境科学専攻 地球化学 助教
大学院担当
大学院環境学研究科
学部担当
理学部 地球惑星科学科
職名
助教

学位 1

  1. 博士(理学) ( 2013年3月   北海道大学 ) 

研究キーワード 7

  1. 地球外物質

  2. 宇宙化学

  3. 有機物

  4. 質量分析

  5. 有機物

  6. 地球外物質

  7. 宇宙化学

研究分野 1

  1. 自然科学一般 / 宇宙惑星科学

経歴 6

  1. 名古屋大学   大学院環境学研究科 地球環境科学専攻

    2020年5月 - 現在

  2. 九州大学   大学院理学研究院 地球惑星科学部門

    2020年4月

  3. 九州大学   惑星微量有機化合物研究センター   特任助教

    2016年4月 - 2020年3月

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    国名:日本国

  4. 九州大学   惑星微量有機化合物研究センター   特任助教

    2016年4月 - 2020年3月

  5. 国立研究開発法人宇宙開発研究機構   宇宙科学研究所   宇宙航空ポスドク研究員

    2015年4月 - 2016年3月

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    国名:日本国

  6. 国立研究開発法人 物質・材料研究機構   環境・エネルギー材料部門   NIMSポスドク研究員

    2013年4月 - 2015年3月

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    国名:日本国

▼全件表示

学歴 3

  1. 北海道大学   大学院理学院   自然史科学専攻

    2010年4月 - 2013年3月

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    国名: 日本国

  2. 北海道大学   大学院理学院   自然史科学専攻

    2008年4月 - 2010年3月

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    国名: 日本国

  3. 神戸大学   理学部   地球惑星科学科

    2004年4月 - 2008年3月

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    国名: 日本国

所属学協会 4

  1. 日本地球化学会

  2. 日本地球惑星科学連合

  3. 日本惑星科学会

  4. Meteoritical Society

受賞 1

  1. Geochemical Journal Award

    2015年7月   Geochemical Society of Japan   Deuterium- and 15N-signatures of organic globules in Murchison and Northwest Africa 801 meteorites.

    Minako Hashiguchi, Sachio Kobayashi & Hisayoshi Yurimoto

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    受賞区分:学会誌・学術雑誌による顕彰 

 

論文 32

  1. Microscale hydrogen, carbon, and nitrogen isotopic diversity of organic matter in asteroid Ryugu

    Nittler L.R., Barosch J., Burgess K., Stroud R.M., Wang J., Yabuta H., Enokido Y., Matsumoto M., Nakamura T., Kebukawa Y., Yamashita S., Takahashi Y., Bejach L., Bonal L., Cody G.D., Dartois E., Dazzi A., De Gregorio B., Deniset-Besseau A., Duprat J., Engrand C., Hashiguchi M., Kilcoyne A.L.D., Komatsu M., Martins Z., Mathurin J., Montagnac G., Mostefaoui S., Okumura T., Quirico E., Remusat L., Sandford S., Shigenaka M., Suga H., Takeichi Y., Tamenori Y., Verdier-Paoletti M., Wakabayashi D., Abe M., Kamide K., Miyazaki A., Nakato A., Nakazawa S., Nishimura M., Okada T., Saiki T., Tanaka S., Terui F., Usui T., Yada T., Yogata K., Yoshikawa M., Yurimoto H., Noguchi T., Okazaki R., Naraoka H., Sakamoto K., Tachibana S., Watanabe S.i., Tsuda Y.

    Earth and Planetary Science Letters   637 巻   2024年7月

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    出版者・発行元:Earth and Planetary Science Letters  

    We report the H, C, and N isotopic compositions of microscale (0.2 to 2 µm) organic matter in samples of asteroid Ryugu and the Orgueil CI carbonaceous chondrite. Three regolith particles of asteroid Ryugu, returned by the Hayabusa2 spacecraft, and several fragments of Orgueil were analyzed by NanoSIMS isotopic imaging. The isotopic distributions of the Ryugu samples from two different collection spots are closely similar to each other and to the Orgueil samples, strengthening the proposed Ryugu-CI chondrite connection. Most individual sub-μm organic grains have isotopic compositions within error of bulk values, but 2–10 % of them are outliers exhibiting large isotopic enrichments or depletions in D, 15N, and/or 13C. The H, C and N isotopic compositions of the outliers are not correlated with each other: while some organic grains are both D- and 15N-enriched, many are enriched or depleted in one or the other system. This most likely points to a diversity in isotopic fractionation pathways and thus diversity in the local formation environments for the individual outlier grains. The observation of a relatively small population of isotopic outlier grains can be explained either by escape from nebular and/or parent body homogenization of carbonaceous precursor material or addition of later isotopic outlier grains. The strong chemical similarity of isotopically typical and isotopically outlying grains, as reflected by synchrotron x-ray absorption spectra, suggests a genetic connection and thus favors the former, homogenization scenario. However, the fact that even the least altered meteorites show the same pattern of a small population of outliers on top of a larger population of homogenized grains indicates that some or most of the homogenization occurred prior to accretion of the macromolecular organic grains into asteroidal parent bodies.

    DOI: 10.1016/j.epsl.2024.118719

    Scopus

  2. AFM-IR nanospectroscopy of nanoglobule-like particles in Ryugu samples returned by the Hayabusa2 mission

    Jérémie Mathurin, Laure Bejach, Emmanuel Dartois, Cécile Engrand, Alexandre Dazzi, Ariane Deniset-Besseau, Jean Duprat, Yoko Kebukawa, Hikaru Yabuta, Lydie Bonal, Eric Quirico, Christophe Sandt, Ferenc Borondics, Jens Barosch, Pierre Beck, D. George Cody, T. Brad De Gregorio, Minako Hashiguchi, A.L. David Kilcoyne, Mutsumi Komatsu, Zita Martins, Megumi Matsumoto, Gilles Montagnac, Smail Mostefaoui, R. Larry Nittler, Takuji Ohigashi, Taiga Okumura, T.H. Van Phan, Laurent Remusat, Scott Sandford, Miho Shigenaka, Rhonda Stroud, Hiroki Suga, Yoshio Takahashi, Yasuo Takeichi, Yusuke Tamenori, Maximilien Verdier-Paoletti, Shohei Yamashita, Tomoki Nakamura, Tomoyo Morita, Mizuha Kikuiri, Kana Amano, Eiichi Kagawa, Takaaki Noguchi, Hiroshi Naraoka, Ryuji Okazaki, Kanako Sakamoto, Hisayoshi Yurimoto, Masanao Abe, Kanami Kamide, Akiko Miyazaki, Aiko Nakato, Satoru Nakazawa, Masahiro Nishimura, Tatsuaki Okada, Takanao Saiki, Shogo Tachibana, Satoshi Tanaka, Fuyuto Terui, Yuichi Tsuda, Tomohiro Usui, Sei-ichiro Watanabe, Toru Yada, Kasumi Yogata, Makoto Yoshikawa

    Astronomy & Astrophysics     2024年2月

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:EDP Sciences  

    The JAXA Hayabusa2 mission returned well-preserved samples collected from the carbonaceous asteroid Ryugu, providing unique non-terrestrially weathered samples from a known parent body. This work aims to provide a better understanding of the formation and evolution of primitive asteroidal matter by studying the fine scale association of organic matter and minerals in Ryugu samples. We characterized the samples by IR nanospectroscopy using the AFM-IR technique. This technique overcomes the diffraction limit (of several microns) of conventional infrared microspectroscopy (µ-FTIR). The samples were mapped in the mid-IR range at a lateral spatial resolution about a hundred times better than with µ-FTIR. This provided us with unique in situ access to the distribution of the different infrared signatures of organic components at the sub-micron scale present in the Ryugu whole-rock samples as well as to the characterization of the compositional variability of Ryugu in the insoluble organic matter (IOM) chemically extracted from the Ryugu samples. The AFM-IR maps of whole-rock particles and IOM residues from Ryugu samples were recorded with a lateral resolution of tens of nanometers. Spectra were recorded in the 1900-900 cm$^−1$ spectral range by AFM-IR (Icon-IR) for all samples, and additional spectra were recorded from 2700 to 4000 cm$^−1$ for one IOM sample by an optical photothermal IR (O-PTIR) technique using a mIRage$^ textregistered $ IR microscope. Organic matter is present in two forms in the whole-rock samples: as a diffuse phase intermixed with the phyllosilicate matrix and as individual organic nanoparticles. We identify the Ryugu organic nanoparticles as nanoglobule-like inclusions texturally resembling nanoglobules present in primitive meteorites. Using AFM-IR, we record for the first time the infrared spectra of Ryugu organic nanoparticles that clearly show enhanced carbonyl (C=O) and CH contributions with respect to the diffuse organic matter in Ryugu whole-rock and IOM residue.

    DOI: 10.1051/0004-6361/202347435

  3. Electron microscopy observations of the diversity of Ryugu organic matter and its relationship to minerals at the micro‐ to nano‐scale

    Rhonda M. Stroud, Jens Barosch, Lydie Bonal, Katherine Burgess, George D. Cody, Bradley T. De Gregorio, Luke Daly, Emmanuel Dartois, Elena Dobrică, Jean Duprat, Cecile Engrand, Dennis Harries, Minako Hashiguchi, Hope Ishii, Yoko Kebukawa, A. David Kilcoyne, Falko Langenhorst, Martin R. Lee, Larry R. Nittler, Eric Quirico, Taiga Okumura, Laurent Remusat, Scott Sandford, Hikaru Yabuta, Masanao Abe, Neyda M. Abreu, Paul A. J. Bagot, Pierre Beck, Laure Bejach, Phil A. Bland, John C. Bridges, Brittany A. Cymes, Alexandre Dazzi, Francisco de la Peña, Ariane Deniset‐Besseau, Satomi Enju, Yuma Enokido, David R. Frank, Jennifer Gray, Mitsutaka Haruta, Satoshi Hata, Leon Hicks, Yohei Igami, Damien Jacob, Kanami Kamide, Mutsumi Komatsu, Sylvain Laforet, Hugues Leroux, Corentin Le Guillou, Zita Martins, Maya Marinova, James Martinez, Jérémie Mathurin, Megumi Matsumoto, Toru Matsumoto, Junya Matsuno, Samuel McFadzean, Tatsuhiro Michikami, Itaru Mitsukawa, Akira Miyake, Masaaki Miyahara, Akiko Miyazaki, Gilles Montagnac, Smail Mostefaoui, Tomoki Nakamura, Aiko Nakato, Hiroshi Naraoka, Yusuke Nakauchi, Satoru Nakazawa, Masahiro Nishimura, Takaaki Noguchi, Kenta Ohtaki, Takuji Ohigashi, Tatsuaki Okada, Shota Okumura, Ryuji Okazaki, Thi H. V. Phan, Rolando Rebois, Kanako Sakamoto, Takanao Saiki, Hikaru Saito, Yusuke Seto, Miho Shigenaka, William Smith, Hiroki Suga, Mingqi Sun, Shogo Tachibana, Yoshio Takahashi, Yasuo Takeichi, Akihisa Takeuchi, Aki Takigawa, Yusuke Tamenori, Satoshi Tanaka, Fuyuto Terui, Michelle S. Thompson, Naotaka Tomioka, Akira Tsuchiyama, Yuichi Tsuda, Kentaro Uesugi, Masayuki Uesugi, Tomohiro Usui, Maximilien Verdier‐Paoletti, Daisuke Wakabayashi, Sei‐ichiro Watanabe, Toru Yada, Shohei Yamashita, Masahiro Yasutake, Kasumi Yogata, Makoto Yoshikawa, Hisayoshi Yurimoto, Pierre‐M. Zanetta, Thomas Zega, Michael E. Zolensky

    Meteoritics & Planetary Science     2024年1月

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:Wiley  

    Abstract

    Transmission electron microscopy analyses of Hayabusa2 samples show that Ryugu organic matter exhibits a range of morphologies, elemental compositions, and carbon functional chemistries consistent with those of carbonaceous chondrites that have experienced low‐temperature aqueous alteration. Both nanoglobules and diffuse organic matter are abundant. Non‐globular organic particles are also present, and including some that contain nanodiamond clusters. Diffuse organic matter is finely distributed in and around phyllosilicates, forms coatings on other minerals, and is also preserved in vesicles in secondary minerals such as carbonate and pyrrhotite. The average elemental compositions determined by energy‐dispersive spectroscopy of extracted, demineralized insoluble organic matter samples A0107 and C0106 are C<sub>100</sub>N<sub>3</sub>O<sub>9</sub>S<sub>1</sub> and C<sub>100</sub>N<sub>3</sub>O<sub>7</sub>S<sub>1</sub>, respectively, with the difference in O/C slightly outside the difference in the standard error of the mean. The functional chemistry of the nanoglobules varies from mostly aromatic C=C to mixtures of aromatic C=C, ketone C=O, aliphatic (CH<sub>n</sub>), and carboxyl (COOH) groups. Diffuse organic matter associated with phyllosilicates has variable aromatic C, ketone and carboxyl groups, and some localized aliphatics, but is dominated by molecular carbonate (CO<sub>3</sub>) absorption, comparable to prior observations of clay‐bound organic matter in CI meteorites.

    DOI: 10.1111/maps.14128

  4. The thermal history of Ryugu based on Raman characterization of Hayabusa2 samples

    Bonal, L; Quirico, E; Montagnac, G; Komatsu, M; Kebukawa, Y; Yabuta, H; Amano, K; Barosch, J; Bejach, L; Cody, GD; Dartois, E; Dazzi, A; De Gregorio, B; Deniset-Besseau, A; Duprat, J; Engrand, C; Hashiguchi, M; Kamide, K; Kilcoyne, D; Martins, Z; Mathurin, J; Mostefaoui, S; Nittler, L; Ohigashi, T; Okumura, T; Remusat, L; Sandford, S; Shigenaka, M; Stroud, R; Suga, H; Takahashi, Y; Takeichi, Y; Tamenori, Y; Verdier-Paoletti, M; Yamashita, S; Nakamura, T; Naraoka, H; Noguchi, T; Okazaki, R; Yurimoto, H; Tachibana, S; Abe, M; Miyazaki, A; Nakato, A; Nakazawa, S; Nishimura, M; Okada, T; Saiki, T; Sakamoto, K; Tanaka, S; Terui, F; Tsuda, Y; Usui, T; Watanabe, S; Yada, T; Yogata, K; Yoshikawa, M

    ICARUS   408 巻   頁: 115826 - 115826   2024年1月

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:Icarus  

    This paper is focused on the characterization of the thermal history of C-type asteroid Ryugu through the structure of the polyaromatic carbonaceous matter in the returned samples determined by Raman spectroscopy. Both intact particles and extracted Insoluble Organic Matter (IOM) from the two sampling sites on Ryugu have been characterized. The main conclusions are that (i) there is no structural difference of the polyaromatic component probed by Raman spectroscopy between the two sampling sites, (ii) in a manner similar to type 1 and 2 chondrites, the characterized Ryugu particles did not experience significant long-duration thermal metamorphism related to the radioactive decay of elements such as 26Al; (iii) some structural variability is nevertheless observed within our particle set. It can be interpreted as some particles having experienced some short-duration and weak heating (R3 in the scale defined by Quirico et al. 2018 and TII or lower according to the scale defined by Nakamura, 2005).

    DOI: 10.1016/j.icarus.2023.115826

    Web of Science

    Scopus

  5. Polycyclic aromatic hydrocarbons in samples of Ryugu formed in the interstellar medium

    Zeichner, SS; Aponte, JC; Bhattacharjee, S; Dong, GN; Hofmann, AE; Dworkin, JP; Glavin, DP; Elsila, JE; Graham, HV; Naraoka, H; Takano, Y; Tachibana, S; Karp, AT; Grice, K; Holman, AI; Freeman, KH; Yurimoto, H; Nakamura, T; Noguchi, T; Okazaki, R; Yabuta, H; Sakamoto, K; Yada, T; Nishimura, M; Nakato, A; Miyazaki, A; Yogata, K; Abe, M; Okada, T; Usui, T; Yoshikawa, M; Saiki, T; Tanaka, S; Terui, F; Nakazawa, S; Watanabe, S; Tsuda, Y; Hamase, K; Fukushima, K; Aoki, D; Hashiguchi, M; Mita, H; Chikaraishi, Y; Ohkouchi, N; Ogawa, NO; Sakai, S; Parker, ET; McLain, HL; Orthous-Daunay, FR; Vuitton, V; Wolters, C; Schmitt-Kopplin, P; Hertkorn, N; Thissen, R; Ruf, A; Isa, J; Oba, Y; Koga, T; Yoshimura, T; Araoka, D; Sugahara, H; Furusho, A; Furukawa, Y; Aoki, J; Kano, K; Nomura, SM; Sasaki, K; Sato, H; Yoshikawa, T; Tanaka, S; Morita, M; Onose, M; Kabashima, F; Fujishima, K; Yamazaki, T; Kimura, Y; Eiler, JM

    SCIENCE   382 巻 ( 6677 ) 頁: 1411 - 1415   2023年12月

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    記述言語:英語   出版者・発行元:Science  

    Polycyclic aromatic hydrocarbons (PAHs) contain ≲20% of the carbon in the interstellar medium. They are potentially produced in circumstellar environments (at temperatures ≳1000 kelvin), by reactions within cold (~10 kelvin) interstellar clouds, or by processing of carbon-rich dust grains. We report isotopic properties of PAHs extracted from samples of the asteroid Ryugu and the meteorite Murchison. The doubly-13C substituted compositions (D2×13C values) of the PAHs naphthalene, fluoranthene, and pyrene are 9 to 51% higher than values expected for a stochastic distribution of isotopes. The D2×13C values are higher than expected if the PAHs formed in a circumstellar environment, but consistent with formation in the interstellar medium. By contrast, the PAHs phenanthrene and anthracene in Ryugu samples have D2×13C values consistent with formation by higher-temperature reactions.

    DOI: 10.1126/science.adg6304

    Web of Science

    Scopus

    PubMed

  6. Soluble organic matter Molecular atlas of Ryugu reveals cold hydrothermalism on C-type asteroid parent body

    Schmitt-Kopplin P., Hertkorn N., Harir M., Moritz F., Lucio M., Bonal L., Quirico E., Takano Y., Dworkin J.P., Naraoka H., Tachibana S., Nakamura T., Noguchi T., Okazaki R., Yabuta H., Yurimoto H., Sakamoto K., Yada T., Nishimura M., Nakato A., Miyazaki A., Yogata K., Abe M., Usui T., Yoshikawa M., Saiki T., Tanaka S., Terui F., Nakazawa S., Okada T., Watanabe S.i., Tsuda Y., Hamase K., Furusho A., Hashiguchi M., Fukushima K., Aoki D., Aponte J.C., Parker E.T., Glavin D.P., McLain H.L., Elsila J.E., Graham H.V., Eiler J.M., Ruf A., Orthous-Daunay F.R., Isa J., Vuitton V., Thissen R., Ogawa N.O., Sakai S., Yoshimura T., Koga T., Sugahara H., Ohkouchi N., Mita H., Furukawa Y., Oba Y.

    Nature Communications   14 巻 ( 1 )   2023年12月

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    出版者・発行元:Nature Communications  

    The sample from the near-Earth carbonaceous asteroid (162173) Ryugu is analyzed in the context of carbonaceous meteorites soluble organic matter. The analysis of soluble molecules of samples collected by the Hayabusa2 spacecraft shines light on an extremely high molecular diversity on the C-type asteroid. Sequential solvent extracts of increasing polarity of Ryugu samples are analyzed using mass spectrometry with complementary ionization methods and structural information confirmed by nuclear magnetic resonance spectroscopy. Here we show a continuum in the molecular size and polarity, and no organomagnesium molecules are detected, reflecting a low temperature and water-rich environment on the parent body approving earlier mineralogical and chemical data. High abundance of sulfidic and nitrogen rich compounds as well as high abundance of ammonium ions confirm the water processing. Polycyclic aromatic hydrocarbons are also detected in a structural continuum of carbon saturations and oxidations, implying multiple origins of the observed organic complexity, thus involving generic processes such as earlier carbonization and serpentinization with successive low temperature aqueous alteration.

    DOI: 10.1038/s41467-023-42075-y

    Scopus

  7. Chemical evolution of primordial salts and organic sulfur molecules in the asteroid 162173 Ryugu

    Yoshimura Toshihiro, Takano Yoshinori, Naraoka Hiroshi, Koga Toshiki, Araoka Daisuke, Ogawa Nanako O., Schmitt-Kopplin Philippe, Hertkorn Norbert, Oba Yasuhiro, Dworkin Jason P., Aponte Jose C., Yoshikawa Takaaki, Tanaka Satoru, Ohkouchi Naohiko, Hashiguchi Minako, Mclain Hannah, Parker Eric T., Sakai Saburo, Yamaguchi Mihoko, Suzuki Takahiro, Yokoyama Tetsuya, Yurimoto Hisayoshi, Nakamura Tomoki, Noguchi Takaaki, Okazaki Ryuji, Yabuta Hikaru, Sakamoto Kanako, Yada Toru, Nishimura Masahiro, Nakato Aiko, Miyazaki Akiko, Yogata Kasumi, Abe Masanao, Okada Tatsuaki, Usui Tomohiro, Yoshikawa Makoto, Saiki Takanao, Tanaka Satoshi, Terui Fuyuto, Nakazawa Satoru, Watanabe Sei-ichiro, Tsuda Yuichi, Tachibana Shogo, Hamase Kenji, Furusho Aogu, Fukushima Kazuhiko, Aoki Dan, Glavin Daniel P., Mclain Hannah L., Elsila Jamie E., Graham Heather V., Eiler John M., Ruf Alexander, Orthous-Daunay Francois-Regis, Wolters Cedric, Isa Junko, Morita Mayu, Vuitton Veronique, Thissen Roland, Nomura Shin-ichiro M., Sugahara Haruna, Mita Hajime, Furukawa Yoshihiro, Chikaraishi Yoshito, Onose Morihiko, Kabashima Fumie, Fujishima Kosuke, Sato Hajime, Sasaki Kazunori, Kano Kuniyuki, Aoki Junken, Yamazaki Tomoya, Kimura Yuki

    NATURE COMMUNICATIONS   14 巻 ( 1 ) 頁: 5284   2023年9月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Nature Communications  

    Samples from the carbonaceous asteroid (162173) Ryugu provide information on the chemical evolution of organic molecules in the early solar system. Here we show the element partitioning of the major component ions by sequential extractions of salts, carbonates, and phyllosilicate-bearing fractions to reveal primordial brine composition of the primitive asteroid. Sodium is the dominant electrolyte of the salt fraction extract. Anions and NH4+ are more abundant in the salt fraction than in the carbonate and phyllosilicate fractions, with molar concentrations in the order SO42−> Cl−> S2O32−> NO3−> NH4+. The salt fraction extracts contain anionic soluble sulfur-bearing species such as S n-polythionic acids (n < 6), C n-alkylsulfonates, alkylthiosulfonates, hydroxyalkylsulfonates, and hydroxyalkylthiosulfonates (n < 7). The sulfur-bearing soluble compounds may have driven the molecular evolution of prebiotic organic material transforming simple organic molecules into hydrophilic, amphiphilic, and refractory S allotropes.

    DOI: 10.1038/s41467-023-40871-0

    Web of Science

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    PubMed

    その他リンク: https://www.nature.com/articles/s41467-023-40871-0

  8. Infrared absorption spectra from organic matter in the asteroid Ryugu samples: Some unique properties compared to unheated carbonaceous chondrites

    Kebukawa, Y; Quirico, E; Dartois, E; Yabuta, H; Bejach, L; Bonal, L; Dazzi, A; Deniset-Besseau, A; Duprat, J; Engrand, C; Mathurin, J; Barosch, J; Cody, GD; De Gregorio, B; Hashiguchi, M; Kamide, K; Kilcoyne, D; Komatsu, M; Martins, Z; Montagnac, G; Mostefaoui, S; Nittler, LR; Ohigashi, T; Okumura, T; Remusat, L; Sandford, S; Shigenaka, M; Stroud, R; Suga, H; Takahashi, Y; Takeichi, Y; Tamenori, Y; Verdier-Paoletti, M; Wakabayashi, D; Yamashita, S; Yurimoto, H; Nakamura, T; Noguchi, T; Okazaki, R; Naraoka, H; Sakamoto, K; Tachibana, S; Yada, T; Nishimura, M; Nakato, A; Miyazaki, A; Yogata, K; Abe, M; Okada, T; Usui, T; Yoshikawa, M; Saiki, T; Tanaka, S; Terui, F; Nakazawa, S; Watanabe, S; Tsuda, Y

    METEORITICS & PLANETARY SCIENCE     2023年8月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Meteoritics and Planetary Science  

    The infrared spectral characteristics of organic-rich acid residues prepared from Ryugu samples returned by the JAXA Hayabusa2 mission generally match those from unheated carbonaceous chondrite meteorites, but the residues from Ryugu are richer in methyl and methylene functional groups and have higher CH2/CH3 ratios. Moreover, two distinct outlier carbonaceous phases are found; one with spectral characteristics of N-H functional groups, likely amides, and a second phase containing less nitrogen. Such infrared characteristics of Ryugu organic matter might indicate the pristine nature of the freshly collected samples and reflect the near-surface chemistry in the parent asteroid.

    DOI: 10.1111/maps.14064

    Web of Science

    Scopus

  9. The spatial distribution of soluble organic matter and their relationship to minerals in the asteroid (162173) Ryugu

    Hashiguchi, M; Aoki, D; Fukushima, K; Naraoka, H; Takano, Y; Dworkin, JP; Dworkin, KE; Aponte, JC; Elsila, JE; Eiler, JM; Furukawa, Y; Furusho, A; Glavin, DP; Graham, HV; Hamase, K; Hertkorn, N; Isa, J; Koga, T; McLain, HL; Mita, H; Oba, Y; Ogawa, NO; Ohkouchi, N; Orthous-Daunay, FR; Parker, ET; Ruf, A; Sakai, S; Schmitt-Kopplin, P; Sugahara, H; Thissen, R; Vuitton, V; Wolters, C; Yoshimura, T; Yurimoto, H; Nakamura, T; Noguchi, T; Okazaki, R; Yabuta, H; Sakamoto, K; Tachibana, S; Yada, T; Nishimura, M; Nakato, A; Miyazaki, A; Yogata, K; Abe, M; Usui, T; Yoshikawa, M; Saiki, T; Tanaka, S; Terui, F; Nakazawa, S; Watanabe, SI; Tsuda, Y

    EARTH PLANETS AND SPACE   75 巻 ( 1 )   2023年5月

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    出版者・発行元:Earth, Planets and Space  

    We performed in-situ analysis on a ~ 1 mm-sized grain A0080 returned by the Hayabusa2 spacecraft from near-Earth asteroid (162173) Ryugu to investigate the relationship of soluble organic matter (SOM) to minerals. Desorption electrospray ionization-high resolution mass spectrometry (DESI-HRMS) imaging mapped more than 200 CHN, CHO, CHO–Na (sodium adducted), and CHNO soluble organic compounds. A heterogeneous spatial distribution was observed for different compound classes of SOM as well as among alkylated homologues on the sample surface. The A0080 sample showed mineralogy more like an Ivuna-type (CI) carbonaceous chondrite than other meteorites. It contained two different lithologies, which are either rich (lithology 1) or poor (lithology 2) in magnetite, pyrrhotite, and dolomite. CHN compounds were more concentrated in lithology 1 than in lithology 2; on the other hand, CHO, CHO–Na, and CHNO compounds were distributed in both lithologies. Such different spatial distribution of SOM is likely the result of interaction of the SOM with minerals, during precipitation of the SOM via fluid activity, or could be due to difference in transportation efficiencies of SOMs in aqueous fluid. Organic-related ions measured by time-of-flight secondary ion mass spectrometry (ToF–SIMS) did not coincide with the spatial distribution revealed by DESI-HRMS imaging. This result may be because the different ionization mechanism between DESI and SIMS, or indicate that the ToF–SIMS data would be mainly derived from methanol-insoluble organic matter in A0080. In the Orgueil meteorite, such relationship between altered minerals and SOM distributions was not observed by DESI-HRMS analysis and field-emission scanning electron microscopy, which would result from differences of SOM formation processes and sequent alteration process on the parent bodies or even on the Earth. Alkylated homologues of CHN compounds were identified in A0080 by DESI-HRMS imaging as observed in the Murchison meteorite, but not from the Orgueil meteorite. These compounds with a large C number were enriched in Murchison fragments with abundant carbonate grains. In contrast, such relationship was not observed in A0080, implying different formation or growth mechanisms for the alkylated CHN compounds by interaction with fluid and minerals on the Murchison parent body and asteroid Ryugu. Graphical Abstract: [Figure not available: see fulltext.]

    DOI: 10.1186/s40623-023-01792-w

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  10. Chemical composition of carbonaceous asteroid Ryugu from synchrotron spectroscopy in the mid- to far-infrared of Hayabusa2-returned samples

    Dartois, E; Kebukawa, Y; Yabuta, H; Mathurin, J; Engrand, C; Duprat, J; Bejach, L; Dazzi, A; Deniset-Besseau, A; Bonal, L; Quirico, E; Sandt, C; Borondics, F; Barosch, J; Cody, GD; De Gregorio, BT; Hashiguchi, M; Kilcoyne, DAL; Komatsu, M; Martins, Z; Matsumoto, M; Montagnac, G; Mostefaoui, S; Nittler, LR; Ohigashi, T; Okumura, T; Remusat, L; Sandford, S; Shigenaka, M; Stroud, R; Suga, H; Takahashi, Y; Takeichi, Y; Tamenori, Y; Verdier-Paoletti, M; Yamashita, S; Nakamura, T; Morita, T; Kikuiri, M; Amano, K; Kagawa, E; Noguchi, T; Naraoka, H; Okazaki, R; Sakamoto, K; Yurimoto, H; Abe, M; Kamide, K; Miyazaki, A; Nakato, A; Nakazawa, S; Nishimura, M; Okada, T; Saiki, T; Tachibana, S; Tanaka, S; Terui, F; Tsuda, Y; Usui, T; Watanabe, SI; Yada, T; Yogata, K; Yoshikawa, M

    ASTRONOMY & ASTROPHYSICS   671 巻   2023年2月

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:Astronomy and Astrophysics  

    Context. The current period is conducive to exploring our Solar System's origins with recent and future space sample return missions, which provide invaluable information from known Solar System asteroids and comets The Hayabusa2 mission of the Japan Aerospace Exploration Agency (JAXA) recently brought back samples from the surface of the Ryugu carbonaceous asteroid. Aims. We aim to identify the different forms of chemical composition of organic matter and minerals that constitute these Solar System primitive objects, to shed light on the Solar System's origins. Methods. In this work, we recorded infrared (IR) hyper-spectral maps of whole-rock Ryugu asteroid samples at the highest achievable spatial resolution with a synchrotron in the mid-IR (MIR). Additional global far-IR (FIR) spectra of each sample were also acquired. Results. The hyper-spectral maps reveal the variability of the functional groups at small scales and the intimate association of phyl-losilicates with the aliphatic components of the organic matter present in Ryugu. The relative proportion of column densities of the identified IR functional groups (aliphatics, hydroxyl + interlayer and/or physisorbed water, carbonyl, carbonates, and silicates) giving access to the composition of the Ryugu samples is estimated from these IR hyper-spectral maps. Phyllosilicate spectra reveal the presence of mixtures of serpentine and saponite. We do not detect anhydrous silicates in the samples analysed, at the scales probed. The carbonates are dominated by dolomite. Aliphatics organics are distributed over the whole samples at the micron scale probed with the synchrotron, and intimately mixed with the phyllosilicates. The aromatic C=C contribution could not be safely deconvolved from OH in most spectra, due to the ubiquitous presence of hydrated minerals. The peak intensity ratios of the organics methylene to methyl (CH2/CH3) of the Ryugu samples vary between about 1.5 and 2.5, and are compared to the ratios in chondrites from types 1 to 3. Overall, the mineralogical and organic characteristics of the Ryugu samples show similarities with those of CI chondrites, although with a noticeably higher CH2/CH3 in Ryugu than generally measured in C1 chondrites collected on Earth, and possibly a higher carbonate content.

    DOI: 10.1051/0004-6361/202244702

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  11. Soluble organic molecules in samples of the carbonaceous asteroid (162173) Ryugu

    Naraoka, H; Takano, Y; Dworkin, JP; Oba, Y; Hamase, K; Furusho, A; Ogawa, NO; Hashiguchi, M; Fukushima, K; Aoki, D; Schmitt-Kopplin, P; Aponte, JC; Parker, ET; Glavin, DP; McLain, HL; Elsila, JE; Graham, HV; Eiler, JM; Orthous-Daunay, FR; Wolters, C; Isa, J; Vuitton, V; Thissen, R; Sakai, S; Yoshimura, T; Koga, T; Ohkouchi, N; Chikaraishi, Y; Sugahara, H; Mita, H; Furukawa, Y; Hertkorn, N; Ruf, A; Yurimoto, H; Nakamura, T; Noguchi, T; Okazaki, R; Yabuta, H; Sakamoto, K; Tachibana, S; Connolly, HC ; Lauretta, DS; Abe, M; Yada, T; Nishimura, M; Yogata, K; Nakato, A; Yoshitake, M; Suzuki, A; Miyazaki, A; Furuya, S; Hatakeda, K; Soejima, H; Hitomi, Y; Kumagai, K; Usui, T; Hayashi, T; Yamamoto, D; Fukai, R; Kitazato, K; Sugita, S; Namiki, N; Arakawa, M; Ikeda, H; Ishiguro, M; Hirata, N; Wada, K; Ishihara, Y; Noguchi, R; Morota, T; Sakatani, N; Matsumoto, K; Senshu, H; Honda, R; Tatsumi, E; Yokota, Y; Honda, C; Michikami, T; Matsuoka, M; Miura, A; Noda, H; Yamada, T; Yoshihara, K; Kawahara, K; Ozaki, M; Iijima, YI; Yano, H; Hayakawa, M; Iwata, T; Tsukizaki, R; Sawada, H; Hosoda, S; Ogawa, K; Okamoto, C; Hirata, N; Shirai, K; Shimaki, Y; Yamada, M; Okada, T; Yamamoto, Y; Takeuchi, H; Fujii, A; Takei, Y; Yoshikawa, K; Mimasu, Y; Ono, G; Ogawa, N; Kikuchi, S; Nakazawa, S; Terui, F; Tanaka, S; Saiki, T; Yoshikawa, M; Watanabe, S; Tsuda, Y

    SCIENCE   379 巻 ( 6634 ) 頁: 789 - +   2023年2月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Science  

    The Hayabusa2 spacecraft collected samples from the surface of the carbonaceous near-Earth asteroid (162173) Ryugu and brought them to Earth. The samples were expected to contain organic molecules, which record processes that occurred in the early Solar System. We analyzed organic molecules extracted from the Ryugu surface samples. We identified a variety of molecules containing the atoms CHNOS, formed by methylation, hydration, hydroxylation, and sulfurization reactions. Amino acids, aliphatic amines, carboxylic acids, polycyclic aromatic hydrocarbons, and nitrogen-heterocyclic compounds were detected, which had properties consistent with an abiotic origin. These compounds likely arose from an aqueous reaction on Ryugu’s parent body and are similar to the organics in Ivuna-type meteorites. These molecules can survive on the surfaces of asteroids and be transported throughout the Solar System.

    DOI: 10.1126/science.abn9033

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    PubMed

  12. Macromolecular organic matter in samples of the asteroid (162173) Ryugu

    Yabuta, H; Cody, GD; Engrand, C; Kebukawa, Y; De Gregorio, B; Bonal, L; Remusat, L; Stroud, R; Quirico, E; Nittler, L; Hashiguchi, M; Komatsu, M; Okumura, T; Mathurin, J; Dartois, E; Duprat, J; Takahashi, Y; Takeichi, Y; Kilcoyne, D; Yamashita, S; Dazzi, A; Deniset-Besseau, A; Sandford, S; Martins, Z; Tamenori, Y; Ohigashi, T; Suga, H; Wakabayashi, D; Verdier-Paoletti, M; Mostefaoui, S; Montagnac, G; Barosch, J; Kamide, K; Shigenaka, M; Bejach, L; Matsumoto, M; Enokido, Y; Noguchi, T; Yurimoto, H; Nakamura, T; Okazaki, R; Naraoka, H; Sakamoto, K; Connolly, HCC; Lauretta, DS; Abe, M; Okada, T; Yada, T; Nishimura, M; Yogata, K; Nakato, A; Yoshitake, M; Iwamae, A; Furuya, S; Hatakeda, K; Miyazaki, A; Soejima, H; Hitomi, Y; Kumagai, K; Usui, T; Hayashi, T; Yamamoto, D; Fukai, R; Sugita, S; Kitazato, K; Hirata, N; Honda, R; Morota, T; Tatsumi, E; Sakatani, N; Namiki, N; Matsumoto, K; Noguchi, R; Wada, K; Senshu, H; Ogawa, K; Yokota, Y; Ishihara, Y; Shimaki, Y; Yamada, M; Honda, C; Michikami, T; Matsuoka, M; Hirata, N; Arakawa, M; Okamoto, C; Ishiguro, M; Jaumann, R; Bibring, JP; Grott, M; Schroeder, S; Otto, K; Pilorget, C; Schmitz, N; Biele, J; Ho, TM; Moussi-Soffys, A; Miura, A; Noda, H; Yamada, T; Yoshihara, K; Kawahara, K; Ikeda, H; Yamamoto, Y; Shirai, K; Kikuchi, S; Ogawa, N; Takeuchi, H; Ono, G; Mimasu, Y; Yoshikawa, K; Takei, Y; Fujii, A; Iijima, YI; Nakazawa, S; Hosoda, S; Iwata, T; Hayakawa, M; Sawada, H; Yano, H; Tsukizaki, R; Ozaki, M; Terui, F; Tanaka, S; Fujimoto, M; Yoshikawa, M; Saiki, T; Tachibana, S; Watanabe, SI; Tsuda, Y

    SCIENCE   379 巻 ( 6634 ) 頁: 790 - U66   2023年2月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Science  

    Samples of the carbonaceous asteroid (162173) Ryugu were collected and brought to Earth by the Hayabusa2 spacecraft. We investigated the macromolecular organic matter in Ryugu samples and found that it contains aromatic and aliphatic carbon, ketone, and carboxyl functional groups. The spectroscopic features of the organic matter are consistent with those in chemically primitive carbonaceous chondrite meteorites that experienced parent-body aqueous alteration (reactions with liquid water). The morphology of the organic carbon includes nanoglobules and diffuse carbon associated with phyllosilicate and carbonate minerals. Deuterium and/or nitrogen-15 enrichments indicate that the organic matter formed in a cold molecular cloud or the presolar nebula. The diversity of the organic matter indicates variable levels of aqueous alteration on Ryugu’s parent body.

    DOI: 10.1126/science.abn9057

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    PubMed

  13. Soluble Sulfur-Bearing Organic Compounds in Carbonaceous Meteorites: Implications for Chemical Evolution in Primitive Asteroids

    Naraoka, H; Hashiguchi, M; Okazaki, R

    ACS EARTH AND SPACE CHEMISTRY   7 巻 ( 1 ) 頁: 41 - 48   2023年1月

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    出版者・発行元:ACS Earth and Space Chemistry  

    Sulfur comprises various compound forms in natural environments and could have played important roles in chemical evolution in the universe. Various soluble organosulfur compounds and inorganic sulfur oxides were identified in the methanol extracts of three carbonaceous chondrites (Murchison, Tagish Lake, and Allende) using high-performance liquid chromatography coupled with high-resolution mass spectrometry. The most abundant S-bearing organic compound was hydroxymethane sulfonic acid (HMSA, HOCH2SO3H), which is reported from a meteorite for the first time, at a concentration of 201 nmol/g in the Murchison meteorite. Because HMSA is known to be produced by the reaction of formaldehyde (HCHO) and bisulfite (HSO3-), this result indicates that formaldehyde should be abundant prior to the reaction with HSO3- in the meteorite parent bodies. The bisulfite derivatives of glycolaldehyde and glyceraldehyde were further identified in the methanol extract, suggesting that the formose reaction had proceeded during the aqueous alteration. The finding of these sugar-HSO3- adducts suggests that the formose reaction might have been controlled by the presence of sulfur species in the body. Furthermore, alkylated sulfonic acids (CnH2n+1SO3H) were also present as a series of homologous compounds up to C14 in the Murchison meteorite, even though previous studies found only C1-C4 sulfonic acids. In addition to organosulfur compounds, variable inorganic polysulfur oxides and acids were detected. The abundant S-bearing compounds in the meteorites imply important roles of sulfur in the organic reactions in carbonaceous asteroids.

    DOI: 10.1021/acsearthspacechem.2c00157

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  14. 脱離エレクトロスプレーイオン化技術を利用した地球外物質中の可溶性有機物の高質量分解能イメージング

    橋口 未奈子

    Viva Origino   51 巻 ( 4 ) 頁: 7   2023年

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    記述言語:日本語   出版者・発行元:生命の起原および進化学会  

    DOI: 10.50968/vivaorigino.51_7

    CiNii Research

  15. Presolar Stardust in Asteroid Ryugu

    Barosch, J; Nittler, LR; Wang, JH; Alexander, CMO; De Gregorio, BT; Engrand, C; Kebukawa, Y; Nagashima, K; Stroud, RM; Yabuta, H; Abe, Y; Aléon, J; Amari, S; Amelin, Y; Bajo, KI; Bejach, L; Bizzarro, M; Bonal, L; Bouvier, A; Carlson, RW; Chaussidon, M; Choi, BG; Cody, GD; Dartois, E; Dauphas, N; Davis, AM; Dazzi, A; Deniset-Besseau, A; Di Rocco, T; Duprat, J; Fujiya, W; Fukai, R; Gautam, I; Haba, MK; Hashiguchi, M; Hibiya, Y; Hidaka, H; Homma, H; Hoppe, P; Huss, GR; Ichida, K; Iizuka, T; Ireland, TR; Ishikawa, A; Ito, M; Itoh, S; Kamide, K; Kawasaki, N; Kilcoyne, ALD; Kita, NT; Kitajima, K; Kleine, T; Komatani, S; Komatsu, M; Krot, AN; Liu, MC; Martins, Z; Masuda, Y; Mathurin, J; McKeegan, KD; Montagnac, G; Morita, M; Mostefaoui, S; Motomura, K; Moynier, F; Nakai, I; Nguyen, AN; Ohigashi, T; Okumura, T; Onose, M; Pack, A; Park, C; Piani, L; Qin, LP; Quirico, E; Remusat, L; Russell, SS; Sakamoto, N; Sandford, SA; Schönbächler, M; Shigenaka, M; Suga, H; Tafla, L; Takahashi, Y; Takeichi, Y; Tamenori, Y; Tang, HL; Terada, K; Terada, Y; Usui, T; Verdier-Paoletti, M; Wada, S; Wadhwa, M; Wakabayashi, D; Walker, RJ; Yamashita, K; Yamashita, S; Yin, QZ; Yokoyama, T; Yoneda, S; Young, ED; Yui, H; Zhang, AC; Abe, M; Miyazaki, A; Nakato, A; Nakazawa, S; Nishimura, M; Okada, T; Saiki, T; Tanaka, S; Terui, F; Tsuda, Y; Watanabe, SI; Yada, T; Yogata, K; Yoshikawa, M; Nakamura, T; Naraoka, H; Noguchi, T; Okazaki, R; Sakamoto, K; Tachibana, S; Yurimoto, H

    ASTROPHYSICAL JOURNAL LETTERS   935 巻 ( 1 )   2022年8月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Astrophysical Journal Letters  

    We have conducted a NanoSIMS-based search for presolar material in samples recently returned from C-type asteroid Ryugu as part of JAXA's Hayabusa2 mission. We report the detection of all major presolar grain types with O- and C-anomalous isotopic compositions typically identified in carbonaceous chondrite meteorites: 1 silicate, 1 oxide, 1 O-anomalous supernova grain of ambiguous phase, 38 SiC, and 16 carbonaceous grains. At least two of the carbonaceous grains are presolar graphites, whereas several grains with moderate C isotopic anomalies are probably organics. The presolar silicate was located in a clast with a less altered lithology than the typical extensively aqueously altered Ryugu matrix. The matrix-normalized presolar grain abundances in Ryugu are 4.8 − 2.6 + 4.7 ppm for O-anomalous grains, 25 − 5 + 6 ppm for SiC grains, and 11 − 3 + 5 ppm for carbonaceous grains. Ryugu is isotopically and petrologically similar to carbonaceous Ivuna-type (CI) chondrites. To compare the in situ presolar grain abundances of Ryugu with CI chondrites, we also mapped Ivuna and Orgueil samples and found a total of 15 SiC grains and 6 carbonaceous grains. No O-anomalous grains were detected. The matrix-normalized presolar grain abundances in the CI chondrites are similar to those in Ryugu: 23 − 6 + 7 ppm SiC and 9.0 − 3.6 + 5.4 ppm carbonaceous grains. Thus, our results provide further evidence in support of the Ryugu-CI connection. They also reveal intriguing hints of small-scale heterogeneities in the Ryugu samples, such as locally distinct degrees of alteration that allowed the preservation of delicate presolar material.

    DOI: 10.3847/2041-8213/ac83bd

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  16. AN UPDATED OVERVIEW OF MACROMOLECULAR ORGANIC MATTER IN THE C-TYPE ASTEROID RYUGU SAMPLES.

    Yabuta, H; Cody, GD; Engrand, C; Kebukawa, Y; De Gregorio, B; Bonal, L; Remusat, L; Stroud, R; Quirico, E; Nittler, LR; Hashiguchi, M; Komatsu, M; Dartois, E; Mathurin, J; Duprat, J; Okumura, T; Takahashi, Y; Takeichi, Y; Kilcoyne, D; Yamashita, S; Dazzi, A; Deniset-Besseau, A; Sandford, S; Mar-Tins, Z; Tamenori, Y; Ohigashi, T; Suga, H; Wakabayashi, D; Verdier-Paoletti, M; Mostefaoui, S; Monta-Gnac, G; Barosch, J; Kamide, K; Shigenaka, M; Bejach, L; Vitale, S; Aoki, D; Fukushima, K; Sugita, S; Yumoto, K; Sugimoto, N; Noguchi, T; Yurimoto, H; Nakamura, T; Okazaki, R; Naraoka, H; Sakamoto, K; Tachibana, S; Watanabe, S; Tsuda, Y

    METEORITICS & PLANETARY SCIENCE   57 巻   2022年8月

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    記述言語:日本語  

    Web of Science

  17. FUNCTIONAL GROUP COMPOSITIONS OF MACROMOLECULAR ORGANIC GRAINS IN (162173) RYUGU IN RELATION TO CARBONACEOUS CHONDRITES.

    De Gregorio, BT; Cody, GD; Stroud, RM; Kilcoyne, ALD; Sandford, S; Nittler, LR; Barosch, J; Yabuta, H; Kebukawa, Y; Okumura, T; Hashiguchi, M; Yamashita, S; Takeichi, Y; Takahashi, Y; Yurimoto, H; Nakamura, T; Noguchi, T; Okazaki, R; Naraoka, H; Sakamoto, K; Tachibana, S; Watanabe, S; Tsuda, Y

    METEORITICS & PLANETARY SCIENCE   57 巻   2022年8月

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    記述言語:日本語  

    Web of Science

  18. The spatial distribution of soluble organic matter and its relationship to minerals in the asteroid (162173) Ryugu.

    Minako Hashiguchi, Dan Aoki, Kazuhiko Fukushima, Hiroshi Naraoka, Yoshinori Takano, Dworkin P. Jason, Aponte C. Jose, Elsila E. Jamie, Eiler M. John, Yoshihiro Furukawa, Aogu Furusho, Glavin P. Daniel, Heather V. Graham, Kenji Hamase, Hertkorn Norbert, Junko Isa, Toshiki Koga, McLain L. Hannah, Hajime Mita, Yasuhiro Oba, Nanako O. Ogawa, Naohiko Ohkouchi, Francois-Regis Orthous-Daunay, Eric T. Parker, Ruf Alexander, Saburo Sakaki, Schmitt-Kopplin Philippe, Haruna Sugahara, Thissen Roland, Vuitton Véronique, Cédric Wolters, Toshihiro Yoshimura, Hisayoshi Yurimoto, Tomoki Nakamura, Takaaki Noguchi, Ryuji Okazaki, Hikaru Yabuta, Kanako Sakamoto, Shogo Tachibana, Toru Yada, Masahiro Nishimura, Aiko Nakato, Akiko Miyazaki, Kasumi Yogata, Masanao Abe, Tomohiro Usui, Makoto Yoshikawa, Takanao Saiki, Satoshi Tanaka, Fuyuto Terui, Satoru Nakazawa, Sei-ichiro Watanabe, Yuichi Tsuda

        2022年7月

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    出版者・発行元:Research Square Platform LLC  

    Abstract

    We performed in-situ analysis on a ~1 mm-sized Ryugu grain A0080 returned by the Hayabusa2 spacecraft to investigate the relationship of soluble organic matter (SOM) to minerals. The DESI-HRMS (desorption electrospray ionization-high resolution mass spectrometry) imaging using methanol spray identified more than 200 soluble organic compounds, which were assigned as CHN, CHO, CHO-Na (sodium adducted), and CHNO in molecular composition. Heterogeneous spatial distribution was observed for different compound classes of SOM as well as among the same alkylated homologues on the sample surface. The A0080 sample showed similar mineralogy to that of CI chondrite and contained two different lithologies, which are rich in magnetite, pyrrhotite, and dolomite (lithology 1) and poor in those minerals (lithology 2). CHN compounds were relatively concentrated in lithology 1 than in lithology 2, on the other hand, CHO, CHO-Na, and CHNO compounds were distributed in both lithologies. Such different spatial distribution of SOM is the result of interaction of the SOM with minerals, during precipitation of the SOM via fluid activity, or could be due to difference in transportation efficiencies of SOMs in aqueous fluid. However, organic-related ions measured by ToF-SIMS did not coincide with the spatial distribution revealed by DESI-HRMS imaging, indicating that the ToF-SIMS data would be mainly derived from methanol-insoluble organic matter in A0080. Alkylated homologues of CHN compounds with large C number appeared more abundant in lithology 2 than lithology 1. In contrast, fragments of the Murchison meteorite showed different features to of A0080, implying different formation or growth mechanisms for the alkylated CHN compounds by interaction with fluid and minerals on Murchison parent body and asteroid Ryugu. This difference might be mainly attributed to the carbonate grains, which would have played as a catalyst for CH<sub>2</sub> growth of CHN compounds. Future in-situ analysis of CI chondrite will provide more reliable constraints for the history of soluble organic compounds in asteroid Ryugu.

    DOI: 10.21203/rs.3.rs-1812195/v1

    その他リンク: https://www.researchsquare.com/article/rs-1812195/v1.html

  19. リュウグウ粒子の可溶性有機物の空間分布と鉱物との関係

    橋口 未奈子, 青木 弾, 福島 和彦, 奈良岡 浩, 圦本 尚義, 中村 智樹, 野口 高明, 岡崎 隆司, 薮田 ひかる, 坂本 佳奈子, 橘 省吾, 渡邊 誠一郎, 津田 雄一

    日本地球化学会年会要旨集   69 巻 ( 0 ) 頁: 104   2022年

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    記述言語:日本語   出版者・発行元:一般社団法人日本地球化学会  

    <p>本発表では,その場分析によりリュウグウ粒子表面の可溶性有機物 (SOM)の空間分布と鉱物との関係を調べた結果を報告する.リュウグウ粒子 (A0080)から,CHN, CHO, CHNO, CHO-Na組成のメタノール可溶な同族体化合物を200種以上検出した. CHN, CHO, CHNO, CHO-Na化合物はそれぞれ異なる空間分布を示し,CHO化合物とCHN化合物については変質鉱物,特にCa-Mg炭酸塩との空間的相関が見られた.これは,小惑星リュウグウにおける流体中の有機物と鉱物との相互作用の結果を示唆している.</p>

    DOI: 10.14862/geochemproc.69.0_104

    CiNii Research

  20. Infiltration of water vapor into multi-layer ceramic capacitors under highly accelerated temperature and humidity stress tests

    Saito, Y; Oguni, T; Nakamura, T; Nada, K; Sano, H; Hashiguchi, M; Sakaguchi, I

    APPLIED PHYSICS EXPRESS   14 巻 ( 5 )   2021年5月

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    記述言語:日本語  

    DOI: 10.35848/1882-0786/abf319

    Web of Science

  21. タギッシュレイク隕石中の可溶性有機物の空間分布と水質変質の影響

    橋口 未奈子, 奈良岡 浩

    日本地球化学会年会要旨集   68 巻 ( 0 ) 頁: 78   2021年

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    記述言語:日本語   出版者・発行元:一般社団法人日本地球化学会  

    <p>本研究では,DESI-HRMSによるイメージング質量分析を用いてタギッシュレイク隕石から同定した,非常に不均質な空間分布を示す可溶性有機物について報告する。フランボイダル磁鉄鉱の空間分布から,同定した化合物は水質変質の程度の低いリソロジーに集中して存在することが分かった。本研究の結果は,隕石母天体上において,強い水質変質を受けた領域で化合物が流されて消失した結果か,もしくは,鉱物との吸着性の違いによるクロマトグラフィー的効果を示すものである。また,同定した化合物にはアルキル基や水分子の付加によって形成される同族体はほとんど検出されなかったことから,水質変質中に形成・化学進化したのではなく,隕石集積時にもともと存在していた有機化合物である可能性が示唆される。</p>

    DOI: 10.14862/geochemproc.68.0_78

    CiNii Research

  22. 炭素質隕石中のMgを含む有機化合物

    橋口 未奈子, 奈良岡 浩

    日本地球化学会年会要旨集   67 巻 ( 0 ) 頁: 80   2020年

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    記述言語:日本語   出版者・発行元:一般社団法人日本地球化学会  

    <p>近年,高質量分解能質量分析により,始原的隕石の可溶性有機化合物 (SOM)からMgを含む有機化合物 (Mg-OC)が報告され,これらは鉱物由来のMgと有機化合物が反応し形成した物質と考えられている。本研究は,Mg-OCの形成経路を理解するため,始原的隕石の in-situ分析を行い,Mg-OCと鉱物との空間的関係を調査した。脱離エレクトロスプレーイオン化とオービトラップ質量分析装置を利用したイメージング質量分析により,Murchison, Nogoya, Tagish Lake隕石フラグメントからMg-OCのアルキル同族体系列を多数検出した。Mg-OCはマトリックス領域に分布し,Mgを含む粘土鉱物との空間的相関が見られた。Mg-OCの相対イオン強度は,各隕石の水質変質の大小関係と一致した。以上より,Mg-OCは,隕石母天体での水質変質時に形成し,粘土鉱物の表面や層間に保存された物質であると考えられる。</p>

    DOI: 10.14862/geochemproc.67.0_80

    CiNii Research

  23. New Applications of High-Resolution Analytical Methods to Study Trace Organic Compounds in Extraterrestrial Materials 査読有り

    Naraoka Hiroshi, Hashiguchi Minako, Sato Yu, Hamase Kenji

    LIFE-BASEL   9 巻 ( 3 )   2019年9月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.3390/life9030062

    Web of Science

    PubMed

  24. High-mass resolution molecular imaging of organic compounds on the surface of Murchison meteorite. 査読有り

    M.Hashiguchi, H. Naraoka

    Meteoritics & Planetary Science   54 巻 ( 2 ) 頁: 452 - 468   2019年2月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1111/maps.13211

    Web of Science

  25. Distinct distribution of soluble N-heterocyclic compounds between CM and CR chondrites. 査読有り

    Geochemical Journalnal   53 巻 ( 1 ) 頁: 33 - 40   2019年1月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.2343/geochemj.2.0546

    Web of Science

  26. エポックメイキングな隕石たち(その13): Renazzo隕石 ~先太陽系-初期太陽系の始原的物質の痕跡~ 査読有り

    橋口 未奈子

    日本惑星科学会誌遊星人   27 巻 ( 3 ) 頁: 253 - 257   2018年9月

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    記述言語:日本語  

    DOI: 10.14909/yuseijin.27.3_253

  27. Pressure, temperature, water content, and oxygen fugacity dependence of the Mg grain-boundary diffusion coefficient in forsterite 査読有り

    Fei Hongzhan, Koizumi Sanae, Sakamoto Naoya, Hashiguchi Minako, Yurimoto Hisayoshi, Marquardt Katharina, Miyajima Nobuyoshi, Katsura Tomoo

    AMERICAN MINERALOGIST   103 巻 ( 9 ) 頁: 1354 - 1361   2018年9月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.2138/am-2018-6480

    Web of Science

    Scopus

    その他リンク: http://orcid.org/0000-0003-0702-0533

  28. In situ organic compound analysis on a meteorite surface by desorption electrospray ionization coupled with an Orbitrap mass spectrometer. 査読有り

    Naraoka H, Hashiguchi M

    Rapid communications in mass spectrometry : RCM   32 巻 ( 12 ) 頁: 959 - 964   2018年6月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1002/rcm.8121

    Scopus

    PubMed

  29. Mg lattice diffusion in iron-free olivine and implications to conductivity anomaly in the oceanic asthenosphere 査読有り

    Fei, H., Koizumi, S., Sakamoto, N., Hashiguchi, M., Yurimoto, H., Marquardt, K., Miyajima, N., Katsura, T.

    Earth and Planetary Science Letters   484 巻   頁: 204 - 212   2018年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1016/j.epsl.2017.12.020

    Scopus

  30. Formation of an ultracarbonaceous Antarctic micrometeorite through minimal aqueous alteration in a small porous icy body 査読有り

    Hikaru Yabuta, Takaaki Noguchi, Shoichi Itoh, Tomoki Nakamura, Akira Miyake, Shinichi Tsujimoto, Noriaki Ohashi, Naoya Sakamoto, Minako Hashiguchi, Ken-ichi Abe, Aya Okubo, A. L. David Kilcoyne, Shogo Tachibana, Ryuji Okazaki, Kentaro Terada, Mitsuru Ebihara, Hiroko Nagahara

    GEOCHIMICA ET COSMOCHIMICA ACTA   214 巻   頁: 172 - 190   2017年10月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:PERGAMON-ELSEVIER SCIENCE LTD  

    A comprehensive study of the organic chemistry and mineralogy of an ultracarbonaceous micrometeorite (UCAMM D05IB80) collected from near the Dome Fuji Station, Antarctica, was carried out to understand the genetic relationship among organic materials, silicates, and water. The micrometeorite is composed of a dense aggregate of similar to 5 mm-sized hollow ellipsoidal organic material containing submicrometer-sized phases such as glass with embedded metal and sulfides (GEMS) and mineral grains. There is a wide area of organic material (similar to 15 x 15 mu m) in its interior. Low-Ca pyroxene is much more abundant than olivine and shows various Mg/(Mg + Fe) ratios ranging from similar to 1.0 to 0.78, which is common to previous works on UCAMMs. By contrast, GEMS grains in this UCAMM have unusual chemical compositions. They are depleted in both Mg and S, which suggests that these elements were leached out from the GEMS grains during very weak aqueous alteration, without the formation of phyllosilicates.
    The organic materials have two textures-smooth and globular with an irregular outline- and these are composed of imine, nitrile and/or aromatic nitrogen heterocycles, and amide. The ratio of nitrogen to carbon (N/C) in the smooth region of the organics is similar to 0.15, which is five times higher than that of insoluble organic macromolecules in types 1 and 2 carbonaceous chondritic meteorites. In addition, the UCAMM organic materials are soluble in epoxy and are thus hydrophilic; this polar nature indicates that they are very primitive. The surface of the material is coated with an inorganic layer, a few nanometers thick, that consists of C, O, Si, S, and Fe. Sulfur is also contained in the interior, implying the presence of organosulfur moieties. There are no isotopic anomalies of D, C-13, or N-15 in the organic material.
    Interstellar photochemistry alone would not be sufficient to explain the N/C ratio of the UCAMM organics; therefore, we suggest that a very small amount of fluid on a comet must have been necessary for the formation of the UCAMM. The GEMS grains depleted in Mg and S in the UCAMM prove a very weak degree of aqueous alteration; weaker than that of carbonaceous chondrites. Short-duration weak alteration probably caused by planetesimal shock locally melted cometary ice grains and released water that dissolved the organics; the fluid would likely have not mobilized because of the very low thermal conductivity of the porous icy body. This event allowed the formation of the large organic puddle of the UCAMM, as well as organic matter sulfurization, formation of thin membrane-like layers of minerals, and deformation of organic nanoglobules. (C) 2017 Elsevier Ltd. All rights reserved.

    DOI: 10.1016/j.gca.2017.06.047

    Web of Science

  31. 脱離エレクトロスプレーを用いたMurchison隕石中の可溶性有機化合物の高分解能質量イメージング

    橋口 未奈子, 奈良岡 浩

    日本地球化学会年会要旨集   64 巻   頁: 134 - 134   2017年

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    記述言語:日本語   出版者・発行元:一般社団法人日本地球化学会  

    <p>本研究では,始原的隕石の可溶性有機化合物の空間分布を明らかにするため,脱離エレクトロスプレーイオン化技術と高質量分解能・高精度で分析可能なオービトラップ質量分析装置を用いて,Murchison隕石表面の質量イメージングを行った。Murchison隕石表面から,CnH2n-2N2 (アルキルイミダゾール)およびCnH2n-1ONの精密質量に相当するシグナルを,質量精度5 ppm以内で検出した。これらの有機物は,炭素数の異なる複数の同族体が検出されており,隕石試料表面の分布は一様では無かった。本発表では,検出した有機化合物の空間分布と,岩石学的観察の結果を比較し,議論を行う。</p>

    DOI: 10.14862/geochemproc.64.0_134

  32. Hydrogen diffusion in the apatite-water system: Fluorapatite parallel to the c-axis 査読有り

    Yoshinori Higashi, Shoichi Itoh, Minako Hashiguchi, Shuhei Sakata, Takafumi Hirata, Ken Watanabe, Isao Sakaguchi

    GEOCHEMICAL JOURNAL   51 巻 ( 1 ) 頁: 115 - 122   2017年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:GEOCHEMICAL SOC JAPAN  

    Many studies in the past decade have sought to explore the origin and evolution of water in planetary bodies based on the hydrogen isotopic compositions of apatite. However, no investigation has studied hydrogen diffusivity in apatite. This work reports hydrogen diffusion experiments using a natural Durango fluorapatite carried out under a saturated (H2O)-H-2/O-2 vapor flow at temperatures of 500-700(omicron)C. Diffusion depth profiles for H-1 and H-2 were measured using secondary ion mass spectrometry (SIMS), indicating that H-2 diffusion occurred by an exchange reaction between the original H-1 and H-2 during annealing. Hydrogen diffusion coefficients were obtained by the fitting of diffusion profiles of H-2 using Fick's second law; they followed an Arrhenius-type relationship. The temperature dependence of hydrogen diffusion parallel to the c-axis at 500-700(omicron)C can be expressed as D = 6.71X10(-13) exp(- 80.5 +/- 3.3) / RT) [m(2) / s]. Hydrogen diffusion coefficients in apatite are several orders of magnitude greater than those of other elements. Hydrogen diffusion in apatite occurs at relatively low temperatures (below 700(omicron)C). This study indicates that the hydrogen isotopic compositions of apatite are readily affected by the presence of water vapor through the H-1-H-2 exchange reaction without changing the total water content in the crystal.

    DOI: 10.2343/geochemj.2.0460

    Web of Science

▼全件表示

MISC 1

  1. 南極微隕石中の可溶性有機物の検出を目指して

    山本康太, 橋口未奈子, 矢田達, 奈良岡浩, 中村智樹, 岡田達明, 岡田達明  

    日本惑星科学会秋季講演会予稿集(Web)2017 巻   2017年

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講演・口頭発表等 6

  1. 小惑星リュウグウからの手紙〜目に見えないものを読み解く“質量分析”の力〜 招待有り

    橋口 未奈子

    第6回 京都生体質量分析研究会国際シンポジウム・国際質量分析イメージングシンポジウム2023 市民公開講座  2023年1月31日  同志社大学 (生命医科学部・ハリス理化学研究所)

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    開催年月日: 2023年1月

    記述言語:日本語   会議種別:公開講演,セミナー,チュートリアル,講習,講義等  

    開催地:同志社大学 (京都)  

  2. TOF-SIMS analysis of macromolecular organic matter in Ryugu samples 国際共著 国際会議

    Minako Hashiguchi, Dan Aoki, Kazuhiko Fukushima, Hikaru Yabuta, Hisayoshi Yurimoto, Tomoki Nakamura, Takaaki Noguchi, Ryuji Okazaki, Hiroshi Naraoka, Kanako Sakamoto, Shogo Tachibana, Sei-ichiro Watanabe, Yuichi Tsuda and the Hayabusa2-initial-analysis IOM team

    Hayabusa 2022 Symposium (9th ISAS Symposium of the Solar System Materials )  2022年11月14日  Astromaterials Science Research Group, Japan Aerospace Exploration Agency

     詳細を見る

    開催年月日: 2022年11月

    記述言語:英語   会議種別:ポスター発表  

  3. 化学的・同位体的特徴から見る地球外有機物の化学進化 招待有り

    橋口未奈子

    「宇宙線で繋ぐ文明・地球環境・太陽系・銀河」 研究会  2022年10月25日 

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    開催年月日: 2022年10月

    会議種別:口頭発表(一般)  

    開催地:京都大学  

  4. リュウグウ粒子の可溶性有機物の空間分布と鉱物との関係

    橋口 未奈子, 青木 弾, 福島 和彦, 奈良岡 浩, 圦本 尚義, 中村 智樹, 野口 高明, 岡崎 隆司, 薮田 ひかる, 坂本 佳奈子, 橘 省吾, 渡邊 誠一郎, 津田 雄一, はやぶさ2可溶性有機物分析チーム

    2022年度 日本地球化学会 第69回年会  日本地球化学会

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    開催年月日: 2022年9月

    記述言語:日本語   会議種別:口頭発表(一般)  

    開催地:高知大学,ハイブリッド開催  

  5. 化学の視点からひも解く太陽系の成り立ちと宇宙有機物 招待有り

    橋口 未奈子

    立命館高等学校 MSコース講演会  2022年7月25日  立命館高等学校

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    開催年月日: 2022年7月

    記述言語:日本語  

    開催地:立命館高等学校 (京都市)  

  6. Spatial Distribution of Soluble Organic Compounds and Their Relationship with Minerals in a Ryugu’s Grain 国際共著 国際会議

    Hashiguchi M., Aoki D.,Fukushima K., Naraoka H., Yurimoto H. et al.

    53rd Lunar and Planetary Science Conference  2022年3月9日  Lunar and Planetary Institute, NASA

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    開催年月日: 2022年3月

    記述言語:英語   会議種別:ポスター発表  

    開催地:The Woodlands, Texas/Online   国名:アメリカ合衆国  

▼全件表示

共同研究・競争的資金等の研究課題 2

  1. 有機金属化学に基づく隕石有機物形成と化学進化過程の解明

    研究課題番号:21468877   2022年4月 - 2024年3月

    創発的研究支援事業 

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    担当区分:研究代表者  資金種別:競争的資金

  2. 金属原子を含む有機化合物 (MOC)から探る隕石有機物の化学進化

    研究課題番号:21K03641   2021年4月 - 2024年3月

    科学研究費助成事業  基盤研究(C)

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    担当区分:研究代表者  資金種別:競争的資金

科研費 3

  1. 金属原子を含む有機化合物 (MOC)から探る隕石有機物の化学進化

    研究課題/研究課題番号:21K03641  2021年4月 - 2024年3月

    科学研究費助成事業  基盤研究(C)

    橋口 未奈子

      詳細を見る

    担当区分:研究代表者 

    配分額:4160000円 ( 直接経費:3200000円 、 間接経費:960000円 )

    始原的隕石には最大数wt%の有機物が含まれているが,その形成や進化過程については未だ議論の最中である。本研究は,隕石有機物の化学進化を紐解くことを目的とし,始原的隕石に含まれる金属原子と有機分子から構成される物質 (Metal-containing organic compounds: MOC)に着目した研究を展開する。これは,鉱物と有機物が相互に作用して形成された物質と考えられる。本研究では,始原的隕石中のMOCの描像を明らかにし,MOCが,隕石有機物の化学進化,特に高分子化過程にどのような影響を及ぼしたのかを明らかにすることを試みる。

  2. 水素・窒素同位体異常をもつ地球外有機物の起源と化学進化の解明

    研究課題/研究課題番号:18K13605  2018年4月 - 2020年3月

    科学研究費助成事業  若手研究

    橋口 未奈子

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    担当区分:研究代表者 

    配分額:1950000円 ( 直接経費:1500000円 、 間接経費:450000円 )

    始原的地球外物質中に保存された水素や窒素同位体異常をもつ有機物の起源および化学進化を議論するため、本研究では、二次イオン質量分析装置を用いたその場同位体比分析のための試料の前処理技術の検討・開発を行った。治具の開発・改良により、有機物の同位体組成に影響を与えないよう、異なる程度の変成・変質プロセスを経験した隕石に対し、乾式研磨手法技術を検討した。また、研磨の困難なミクロンサイズの微粒子については金ディスクへの圧着技術手順を開発し、同位体分析のための試料前処理方法を確立した。
    その場同位体分析を実施するため、試料表面に対し樹脂などの有機物質および水・アルコールなどを用いた研磨を行うことが一般的であるが、それらの処理により地球外物質中の有機物の同位体比や化学組成が変化する可能性がある。一方、本研究で開発した前処理技術は有機物や水などを一切使わない手法であるため、始原的地球外物質中の有機物の同位体比を正しく分析することが可能になると期待される。これにより、地球外有機物、特に水素や窒素同位体異常をもつ有機物の起源、および化学進化プロセスの解明に大きく貢献出来るだろう。

  3. 隕石有機物の窒素同位体異常の起源と初期太陽系内における物質進化

    研究課題/研究課題番号:16H00941  2016年4月 - 2018年3月

    科学研究費助成事業  新学術領域研究(研究領域提案型)

    橋口 未奈子

      詳細を見る

    担当区分:研究代表者 

    配分額:3640000円 ( 直接経費:2800000円 、 間接経費:840000円 )

    アンモニアとの窒素同位体交換反応実験を実施するため、アンモニアガス、およびアンモニア水ー固体間アニール実験を実施した。
    隕石から報告されているまたは星間氷へのUV照射実験で確認されている窒素 (N)を含む有機化合物について、15Nに富むアンモニア水と合成試薬を、100 ℃ 1週間という同位体交換を促進する極端な環境下で反応させた。実験は密閉バイアル容器を用いた閉鎖系で行った。実験後、液体またはガスクロマトグラフィー質量分析により、反応前後における有機試薬の窒素同位体比の変化を調べた。
    その後、15Nで同位体指標したアンモニアガスを用い、バイアル、または、ガラス管・SUS製の真空ラインを用いて、同様の実験を行った。
    隕石中から検出されている窒素含有環状有機化合物である1-アミノピレン(C16H11N)、9-シアノフェナンスレン (C15H9N)、カルバゾール (C12H9N)では、ガス、液体ともに、優位な窒素同位体交換が確認されなかった。一方で、ヘキサメチレンテトラミン (HMT) (C6H12N4)では、アンモニアガスとの反応では優位な窒素同位体交換は見られなかったが、塩基性下 (pH~ 12)におけるアンモニア水との反応で優位な窒素同位体交換が生じることを明らかにした。同様の反応は、60℃、室温でも確かめられた。ガスとの間では交換が起こらなかったことから、その反応には水が必要であることが示唆された。また、反応中、HMTの一部に分解が見られ、分解反応に伴う同位体交換反応が生じている可能性がある。一方、100℃の温度下におけるアンモニア水との加熱反応の核磁気共鳴 (NMR)分析によって、加熱中にHMTの立体配座が変化しており、また、顕著な分解生成物のピークは見られなかったことから、分解に伴う同位体交換だけでなく、加熱中の求核反応によって、窒素同位体交換が生じている可能性が示唆された。
    29年度が最終年度であるため、記入しない。
    29年度が最終年度であるため、記入しない。

 

学術貢献活動 2

  1. 2021年日本地球化学会ショートコース

    役割:企画立案・運営等

    2021年7月

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    種別:学会・研究会等 

  2. 2020年日本地球化学会ショートコース

    役割:企画立案・運営等

    2020年9月

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    種別:学会・研究会等