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 |
| 巻 | 14 |
| 号 | 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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