2016 Fiscal Year Final Research Report
Analysis on paleocean redox condition based on the concentration, speciation, and stable isotope ratio of cerium
| Project/Area Number |
15K17793
|
|---|
| Research Category |
Grant-in-Aid for Young Scientists (B)
|
| Allocation Type | Multi-year Fund |
|---|
| Research Field |
Geochemistry/Cosmochemistry
|
|---|
| Research Institution | Japan Agency for Marine-Earth Science and Technology |
|---|
Principal Investigator |
NAKADA Ryoichi 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 (50726958)
|
|---|
| Project Period (FY) |
2015-04-01 – 2017-03-31
|
| Keywords | セリウム / 希土類元素 / 安定同位体比 / 酸化還元 |
|---|
| Outline of Final Research Achievements |
Efficiently removal of Ba from REE was achieved. In the analysis of Ce stable isotope ratio, AridusII desolvating nebulizer system enables 10 times higher 140Ce signal intensity. Analyses on Ce stable isotopic fractionation at varying pH condition and natural modern analog indicated that this novel proxy can be successfully utilized to reconstruct Earth’s redox state, particularly from slightly oxic to highly oxic conditions.
|
| Free Research Field |
地球化学
|
