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Measurement of 90Sr activity in Fukushima soil samples affected by Nuclear Accident
https://repo.qst.go.jp/records/66347
https://repo.qst.go.jp/records/66347282d6231-a522-4e03-9c75-a12162773313
| Item type | 会議発表用資料 / Presentation(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2017-06-08 | |||||
| タイトル | ||||||
| タイトル | Measurement of 90Sr activity in Fukushima soil samples affected by Nuclear Accident | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_c94f | |||||
| 資源タイプ | conference object | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
S.K.Sahoo
× S.K.Sahoo× N.Kavasi× T.Aono× サフー サラタ クマール× Ｋａｖａｓｉ Ｎｏｒｂｅｒｔ× 青野 辰雄 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Fukushima Daiichi Nuclear Power Plant (FDNPP) accident released β particle emitter fission product, 90Sr, along with gamma emitter nuclides, such as 137Cs, 134Cs, 131I, 132Te into environment. 137Cs, and 90Sr have long-lasting radioecological impact due to their longer half-life (>30 y). Furthermore, the 90Sr has long biological half-life (˜18 y) in the human body. Due to its chemical similarity to calcium it accumulates in bones and irradiates the bone marrow, causing its high radio-toxicity. Assessing 90Sr in the environment is therefore necessary in case of a nuclear disaster. For 90Sr measurement, a new separation laboratory was established at the National Institute for Quantum and Radiological Science and Technology, Japan (QST) in 2012. Fukushima soil samples were collected in 2013. We have observed a weak correlation between 90Sr and 137Cs activity concentrations in samples (Figure 1), however, the 90Sr concentration was lower with three or four magnitudes than 137Cs. In this presentation, a soil sample collection survey in the Fukushima exclusion zone was accomplished in 2016 and some contaminated hot spots were revealed with air dose rate measurement (>20 µSv/h). In the collected soil samples, 137Cs activity concentrations were over 1000 Bq/g while the 90Sr were over 500 Bq kg 1. |
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| 会議概要（会議名, 開催地, 会期, 主催者等） | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | ENVIRA 2017 (International Conference on Environmental Radioactivity) | |||||
| 発表年月日 | ||||||
| 日付 | 2017-05-30 | |||||
| 日付タイプ | Issued | |||||
