Atomic-scale analysis of nanominerals and behavior of the associated radionuclides using Cs corrected TEM
| Project/Area Number |
24540516
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Petrology/Mineralogy/Science of ore deposit
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| Research Institution | Kyushu University |
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Principal Investigator |
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2013: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2012: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Keywords | 環境ナノ物質 / 電子顕微鏡 / 環境ナノ粒子 / 微生物相互作用 / ナノ粒子 / 生体鉱物化 / アメリカ |
|---|
| Outline of Final Research Achievements |
This study performed nanoscale analysis of natural nanoparticles that ubiquitously occur on the Earth surface by means of high resolution transmission electron microscopy in conjunction with a variety of bulk analytical techniques. In Fe and Ce oxide nanoparticles, the surface atoms revealed lower coordination number than bulk. The relationship of nanoparticle with environmental nanoparticles was also investigated. After interaction of microorganisms with inert nanoparticles, the microbial metabolisms were slightly affected; The relative composition of the extracellular polymeric substances (EPS) has been changed as revealed by high performance liquid chromatography. Peptide mass finger print analysis of the intracellular substances exhibited an expression of Eno2p, which is involved in glycolysis of metabolism. The impact of EPS on nanoparticle agglomeration was also evaluated and the adsorption of EPS formed steric barrier resulting in stabilization of colloids.
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Report
(4 results)
Research Products
(17 results)
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[Book] Advances in Nuclear Fuel2012
Author(s)
H. Iwata, H. Shiotsu, M. Kaneko, & S. Utsunomiya
Total Pages
19
Publisher
Nuclear accidents in Fukushima, Japan and exploration of effective decontaminant for the 137Cs-contaminated soils
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