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Isotopic Ratios of Uranium in Soil and Ground Water Samples collected around 30 Km Chernobyl Exclusion Zone
https://repo.qst.go.jp/records/69367
https://repo.qst.go.jp/records/69367becabee9-8565-410a-93e5-44796538a8ef
| Item type | 会議発表用資料 / Presentation(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2008-06-24 | |||||
| タイトル | ||||||
| タイトル | Isotopic Ratios of Uranium in Soil and Ground Water Samples collected around 30 Km Chernobyl Exclusion Zone | |||||
| 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 |
Sarata, Kumar Sahoo
× Sarata, Kumar Sahoo× Tokonami, Shinji× Yoshida, Satoshi× Tsigankov, N.Y.× V, Zamostyan P× サフー サラタ クマール× 床次 眞司× 吉田 聡 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Precise and accurate measurement uranium isotope ratio is essential in environmental monitoring of any contamination in nuclear safeguards. 238U, 235U and 234U are naturally occurring alpha-emitting long-lived radionuclides which are taken up daily at low levels with food and drinking. IUPAC has established natural isotopic composition of 235U/238U to be 0.00725. Therefore, isotope ratio measurements are important because they can provide information on the origin of uranium. The isotope ratios of uranium, 234U/238U, 235U/238U and 236U/238U were measured using a VG Sector 54 thermal ionization mass spectrometer (TIMS) as well as high resolution inductively coupled plasma mass spectrometry (ICP-MS) in soil samples as well as in some water samples collected in the exclusion zone of Chernobyl nuclear power plant. The isotopic composition of Chernobyl soil samples showed significant deviation from the natural uranium and presence of 236U is quite noticeable. The 234U/238U activity ratio varies in the range of 1.06 to 2.1 and 1.42 to 5.75 for soil and water samples, respectively. Enrichment of 235U was also noticeable for soil as well as ground water samples. | |||||
| 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 | International Conference on Radioecology & Environmental Radioactivity | |||||
| 発表年月日 | ||||||
| 日付 | 2008-06-20 | |||||
| 日付タイプ | Issued | |||||
