| Project/Area Number |
24654182
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Single-year Grants |
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| Research Field |
Geochemistry/Astrochemistry
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| Research Institution | Nagoya University |
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Principal Investigator |
ABE Osamu 名古屋大学, 環境学研究科, 助教 (00293720)
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| Co-Investigator(Kenkyū-buntansha) |
YAMADA Keita 東京工業大学, 総合理工学研究科, 准教授 (70323780)
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| Co-Investigator(Renkei-kenkyūsha) |
YOSHIDA Naohiro 東京工業大学, 総合理工学研究科, 教授 (60174942)
MORIMOTO Maki 名古屋大学, 大学院環境学研究科, 研究員 (30377999)
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| Project Period (FY) |
2012-04-01 – 2014-03-31
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2013: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2012: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Keywords | 安定同位体 / 二重置換同位体組成 / clumped-isotope / サンゴ骨格 / 地球化学 / 同位体 |
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| Research Abstract |
Analytical system of clumped isotopes in CO2 was first established with a small-sector isotope ratio mass spectrometer. The internal precision of the single gas D47 measurements was obtained as 0.02 permil for the routine analytical condition, which are comparable with that obtained using a MAT253 mass spectrometer.
Temporal variation of clumped isotopes in Porites coral skeleton, which was collected at Yonaguni Island, southwestern Japan, was determined. The D47 time-series result shows a good agreement with observed temperature variation.
Analytical method of clumped isotopes in O2 was established, based on the CO2 analysis which is generated from O2 and C-13 free graphite.
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