| Project/Area Number |
22654067
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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 | Japan Agency for Marine-Earth Science and Technology |
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Principal Investigator |
CHIKARAISHI Yoshito 独立行政法人海洋研究開発機構, 海洋・極限環境生物圏領域, 主任研究員 (50455490)
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| Project Period (FY) |
2010 – 2012
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| Project Status |
Completed (Fiscal Year 2012)
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| Budget Amount *help |
¥3,240,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥540,000)
Fiscal Year 2012: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2011: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2010: ¥900,000 (Direct Cost: ¥900,000)
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| Keywords | 生物圏地球化学 / NMR / 有機化合物 / 堆積物 |
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| Research Abstract |
As a NMR (Nuclear Magnetic Resonance) application to geochemistry, I tried to develop a rapid and simple primary screening method to identify and quantify organic compounds in extracts from geological samples (e.g., soils and sediments). The results show that 1H-MNR with 1 mm probe can be very much useful for a rapid and simple primary screening (both identification and quantification) of several targeted organic compounds such as chlorophylls and amino acids in the extracts from soils and lacustrine sediments. However, at this moment, it did not work sufficiently for extracts from marine sediments, because high concentration of organic acids and salts in these samples always obstruct spectrum-scan with high resolution. Moreover, other nuclear NMR such as <13>^C NMR and <15>^N NMR and two-dimensional NMR such as 1^H^<-13>C and 1^H^<-15>N were also not useful as a rapid and simple primary screening method for geological samples due to low sensitivity of the spectrum-scan.
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