Insights into hydrocarbons cycling in the subsurface from isotopologue analysis

通过同位素体分析深入了解地下碳氢化合物循环

• 批准号: 21H01198
• 负责人: ジルベルト アレキシー
• 金额: $ 11.56万
• 依托单位: Tokyo Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2021
• 资助国家: 日本
• 起止时间: 2021-04-01 至 2024-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-21H01198/
• 关键词: Hydrocarbons; Isotopologues; Subsurface; Carbon cycle; Isotopologue

We sampled at Tokamachi mud volcano (Niigata prefecture) at new gas seeps. We measured bulk and position-specific isotope composition of hydrocarbons at these new seeps. Thanks to the post-doc employed (Dr Naizhong Zhang), we could measure efficiently the doubly-substituted isotopologues of methane from these different seeps.The data shows a full range of degradation rate from very low biodegradation to >90% biodegradation. This makes Tokamachi a very interesting place to study the impact of hydrocarbons biodegradation on other molecules.We notably showed that the biodegradation of propane is correlated with the abundance of the doubly-substituted isotopologues of methane,suggesting an involvement of methanogenesis associated with biodegradation.

在新的气体渗漏点，我们在托卡马奇泥火山(新泻县)取样。我们在这些新的渗漏处测量了碳氢化合物的体积和特定位置的同位素组成。多亏了博士后(张乃忠博士)，我们可以有效地测量这些不同渗流中甲烷的双取代同位素，数据显示了从极低的生物降解率到90%的生物降解率的全范围。这使得Tokamachi成为研究碳氢化合物生物降解对其他分子影响的一个非常有趣的地方。我们特别指出，丙烷的生物降解与甲烷的双取代同位素的丰度相关，这表明甲烷生成与生物降解相关。

项目成果

Application of fluorination method to isotopologue biogeochemistry

氟化法在同位素生物地球化学中的应用

• 发表时间: 2021
• 作者: Yuichiro Ueno;Koudai Taguchi;Toshiki Katsuta;Mayuko Nakagawa;Naohiro Yoshida;Alexis Gilbert
• 通讯作者: Alexis Gilbert

Effect of tectonic processes on biosphere-geosphere feedbacks across a convergent margin

• DOI: 10.1038/s41561-021-00725-0
• 发表时间: 2021-04-22
• 期刊: NATURE GEOSCIENCE
• 影响因子: 18.3
• 作者: Fullerton, Katherine M.;Schrenk, Matthew O.;Lloyd, Karen G.
• 通讯作者: Lloyd, Karen G.

Isotopologues of organic molecules: method developments and applications

有机分子同位素体：方法开发和应用

• 发表时间: 2022
• 作者: Xu F.;Yamazaki D.;Hunt S. A.;Tsujino N.;Higo Y.;Tange Y.;Ohara K.;Dobson D. P.;遠藤俊祐，伊藤 槙;Alexis Gilbert
• 通讯作者: Alexis Gilbert

The role of ferrous saponite in the formation of sulfur-bearing organic matter on early Earth and early Mars

亚铁皂石在早期地球和早期火星含硫有机物形成中的作用

• 发表时间: 2021
• 作者: Natsumi Noda;Yasuhito Sekine;Yoshio Takahashi;Hiroshi Sakuma;Takahiro Kawai;Mayuko Nakagawa;Norio Kitadai;Kristin Johnson-Finn;Shawn E McGlynn
• 通讯作者: Shawn E McGlynn

Deciphering Hydrocarbons’ Sources and Sinks through Isotopologue measurements

通过同位素体测量破译碳氢化合物的源和汇

• 发表时间: 2022
• 作者: Harada;H.;Tsujimori;T.;Alexis Gilbert
• 通讯作者: Alexis Gilbert