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

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

研究成果: ジャーナルへの寄稿学術誌査読

抄録

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.

本文言語英語
論文番号5284
ジャーナルNature communications
14
1
DOI
出版ステータス出版済み - 12月 2023

!!!All Science Journal Classification (ASJC) codes

  • 化学一般
  • 生化学、遺伝学、分子生物学一般
  • 一般
  • 物理学および天文学一般

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