Isotopomer material cycle analysis

2015 Fiscal Year Final Research Report

• Project/Area Number: 23224013
• Research Category: Grant-in-Aid for Scientific Research (S)
• Allocation Type: Single-year Grants
• Research Field: Geochemistry/Astrochemistry
• Research Institution: Tokyo Institute of Technology
• Principal Investigator: YOSHIDA Naohiro 東京工業大学, 総合理工学研究科, 教授 (60174942)
• Co-Investigator(Kenkyū-buntansha): NANBU Shinkoh 上智大学, 理工学部, 教授 (00249955) ; YAMADA Keita 東京工業大学, 総合理工学研究科, 准教授 (70323780) ; TOYODA Sakae 東京工業大学, 総合理工学研究科, 准教授 (30313357) ; YOSHIKAWA Chisato 国立研究開発法人海洋研究開発機構, 研究員 (40435839) ; Danielache O. Sebastian 上智大学, 理工学部, 助教 (00595754) ; HATTORI Shohei 東京工業大学, 総合理工学研究科, 助教 (70700152) ; GIRBERT Alexis 東京工業大学, 地球生命研究所, 特任助教 (20726955)
• Project Period (FY): 2011-04-01 – 2016-03-31
• Keywords: 物質循環 / 安定同位体 / アイソトポマー / 環境計測 / 理論計算 / 数値モデリング

Outline of Final Research Achievements

The natural stable isotopic abundances of bio elements from hydrogen to sulphur have been used for tracing the material cycles. In this project we have invented the measurement methodology of isotopomers, a molecular species with numerous isotopic molecules composed of various modes of isotopic substitution, and explored the analysis of those enormous data.
They are applied to the global warming related environmental materials and bio molecules, their precursors, as well to describe their origins, production and/or consumption processes quantitatively.
Some isotopomers unknown and short-life intermediates which cannot be observed have been studied by the ab-initio theoretical calculation, checked by the experiments and subject to models described below. The 3 dimensional chemical transfer global circulation model has been applied for the nitrogen oxides and sulphur oxides, and the cycles of a greenhouse gas and aerosols have been well analyzed with their isotopomer data.

Free Research Field

地球化学、環境化学、生物地球化学