2016 Fiscal Year Annual Research Report
福島県における環境及び人への健康への影響の指標となる人工放射性物質に関する研究
| Project/Area Number |
15F14801
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| Research Institution | National Institutes for Quantum and Radiological Science and Technology |
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Principal Investigator |
サフー・サラタ クマール 国立研究開発法人量子科学技術研究開発機構, 放射線医学総合研究所 福島再生支援本部, 上席研究員(定常) (30300908)
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| Co-Investigator(Kenkyū-buntansha) |
KIEREPKO RENATA 国立研究開発法人量子科学技術研究開発機構, 放射線医学総合研究所 福島再生支援本部, 外国人特別研究員
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| Project Period (FY) |
2015-04-24 – 2017-03-31
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| Keywords | Plutonium / Fukushima / Soil |
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| Outline of Annual Research Achievements |
The main goal of our study that was connected with detection of Pu and other actinides isotopes, all samples were subjected to gamma spectrometry measurements for radiocaesium activity. We could measure 134Cs as well as elevated level of 137Cs; the obvious signature of the FDDNP accident. The activity concentration of 137Cs ranged between 0.460 ± 0.029 kBq kg-1 and 113.2 ± 7.4 kBq kg-1 for the reference date 11 March 2011 whereas the activity ratio 134Cs/137Cs was close to 1.The activity concentration of 239+240Pu in samples ranged between <0.006 Bq kg-1 and 0.216 Bq kg-1 with an average value of 0.052 Bq kg-1. We could notice 238Pu only in three samples and the values were usually close to MDC (0.005 Bq kg-1). The activity ratios of 238Pu/239+240Pu in two samples coincided with global fallout and were comparable with reported value.
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| Research Progress Status |
28年度が最終年度であるため、記入しない。
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| Strategy for Future Research Activity |
28年度が最終年度であるため、記入しない。
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