Neodymium stable isotope anaysis of the earth and the moon. Is it chondritic?
| Project/Area Number |
25800302
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Geochemistry/Cosmochemistry
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| Research Institution | Japan Agency for Marine-Earth Science and Technology |
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Principal Investigator |
Wakaki Shigeyuki 国立研究開発法人海洋研究開発機構, 高知コア研究所, 技術研究員 (50548188)
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2015: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2013: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Keywords | ネオジム同位体 / 安定同位体分別 / ダブルスパイク質量分析法 / ストロンチウム同位体 / 高温同位体分別 / 重元素安定同位体 / 高精度同位体分析 / ネオジム同位体分別 / ネオジム |
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| Outline of Final Research Achievements |
A technique for high-presision stable isotope analysis is developed for two refractory elements, Nd and Sr, by using double spike thermal ionization mass spectrometry and low-blank high-yield chemical separation technique by extraction chromatography. Mass spectrometric technique to measure isotope ratios of ng to sub ng sized Nd samples is developed by total evaporation thermal ionization mass spectrometry. Stable isotopic compositions of both Nd and Sr are surveyed for various igneous, sedimentary and carbonate rocks as well as extraterrestrial samples. Systematic analysis of felsic igneous rocks revealed that siginificant isotope fractionation was induced by high-tempreture chemical reaction in the magmatic environment.
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Report
(4 results)
Research Products
(10 results)
