2014 Fiscal Year Final Research Report
The clarification of distribution and speciation of radioactive materials in soil of Tohoku region
| Project/Area Number |
25870055
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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 |
Environmental engineering and reduction of environmental burden
Environmental policy and social systems
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| Research Institution | Tohoku University |
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Principal Investigator |
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| Project Period (FY) |
2013-04-01 – 2015-03-31
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| Keywords | 放射性物質 / α線核種 / 酸溶解 / ICP-MS |
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| Outline of Final Research Achievements |
Various and tremendous amounts of radioacitivated nuclides have been spreaded into air, water, and soil in Tohoku region around Fukushima Prefecture. Among them, alpha particles, such as U-235, U-238, are difficult to detect by spectrometry because of their very long half-period. For the detection of such kinds of long-lived alpha particles, Inductively-Coupled Plasma Mass Spectrometry (ICP-MS) is very effective with the aid of acid digestion. Microwave-assisted acid digestion has been widely utilized for soil specimens, however, the soil specimens will contain natural alpha nuclides, therefore in this study we have utilized simple acid digestion method by just heating, and it has been clarified that their decection could be aciheved with relatively high presition and accuracy.
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| Free Research Field |
環境科学、リサイクル
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