2011 Fiscal Year Final Research Report
Development of a continuous stable isotopic measuring system for precise separate estimation of sources and sinks of greenhouse gases
| Project/Area Number |
21200030
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| Research Category |
Grant-in-Aid for Scientific Research on Innovative Areas (Research a proposed research project)
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| Allocation Type | Single-year Grants |
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| Research Field |
Environmental dynamic analysis
Meteorology/Physical oceanography/Hydrology
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| Research Institution | National Institute of Advanced Industrial Science and Technology |
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Principal Investigator |
MURAYAMA Shohei 独立行政法人産業技術総合研究所, 環境管理技術研究部門, 研究グループ長 (30222433)
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| Co-Investigator(Kenkyū-buntansha) |
MATSUEDA Hidekazu 気象研究所, 地球化学研究部, 室長 (60354552)
SAWA Yosuke 気象研究所, 地球化学研究部, 主任研究官 (00354556)
TSUBOI Kazuhiro 気象研究所, 地球化学研究部, 主任研究官 (10553167)
ISHIDOYA Shigeyuki 独立行政法人産業技術総合研究所, 環境管理技術研究部門, 研究員 (70374907)
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| Co-Investigator(Renkei-kenkyūsha) |
KONDO Hiroaki 独立行政法人産業技術総合研究所, 環境管理技術研究部門, 副研究部門長 (60357051)
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| Project Period (FY) |
2009 – 2011
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| Keywords | 物質循環 / 安定同位体 / 温室効果気体 / レーザ分光 |
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| Research Abstract |
Development of a precise continuous measuring system of stable isotopic ratios of carbon dioxide has been made using an infrared spectroscopic technique. Mid-infrared absorption lines of each isotopologue suitable for precise isotopic measurement have been selected. A proto-type measuring system has been produced, which is equipped with a distributed feedback quantum cascade laser emitting the light with the wave length band including the selected absorption lines. Using this system, absorption spectrum of carbon dioxide can be measured, so that the selected absorption lines can be identified. Although the fundamental structure of the isotopic measuring system has been developed through this study, it has been suggested that further improvement is necessary for precise continuous measurement at observation sites.
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