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URANIUM,THORIUM AND RARE EARTH ELEMENTS DISTRIBUTION IN FUKUSHIMA SOIL SAMPLES
https://repo.qst.go.jp/records/67104
https://repo.qst.go.jp/records/671048821e604-d81a-4350-a112-5383b02ec338
| Item type | 会議発表用資料 / Presentation(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2018-12-28 | |||||
| タイトル | ||||||
| タイトル | URANIUM,THORIUM AND RARE EARTH ELEMENTS DISTRIBUTION IN FUKUSHIMA SOIL SAMPLES | |||||
| 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 |
Kasar, Sharayu
× Kasar, Sharayu× Sahoo, S.K× Aono, Tatsuo× Kasar, Sharayu× Sahoo, Sarata× Aono, Tatsuo |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | There is a growing interest on parent daughter pairs in uranium (U) and thorium (Th) decay series, which are present in natural materials but not in radioactive equilibrium. Rare earth elements (REEs) are important geochemical tracers, which appear as natural trace metals in whole geosphere and as radionuclides in the decay series of nuclear fission. Therefore, measurement of REEs with U and Th in soil samples is highly important. We have used a microwave acid-digestion system for fast decomposition of soil into solution. It is necessary to get more data on REEs, U and Th in Fukushima soils after Fukushima Dai-ichi Nuclear Power Plant (FDNPP) accident. Different types of chemical digestion methods were carried out for validation of analytical procedure and accuracy with certified reference materials (CRMs) supplied by Geological Survey of Japan e.g. JLk-1, JSd-2 and JB-3. Inductively coupled plasma mass spectrometry (ICP-MS) technique was used for precise, accurate and rapid determination of REEs, U and Th simultaneously from digested soil samples. The developed method was applied to Fukushima soil samples. Major elements (as an oxide) were analyzed by X-ray Fluorescence Spectrometry to understand nature of mineral composition of soils. Abundance ratio of Th/U varies from (2.5-4), whereas total REEs (excluding Y) concentration range between 10-100 μg/g. |
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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 | 9th International Conference on High Level Environmental Radiation Areas-For Understanding Chronic Low-Dose-Rate Radiation Exposure Health Effects and Social Impacts (ICHLERA 2018) | |||||
| 発表年月日 | ||||||
| 日付 | 2018-09-25 | |||||
| 日付タイプ | Issued | |||||
