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Accurate measurement of 234U/238U and 235U/238U isotope ratio in water samples at picogram level using multi collector inductively couple plasma mass spectrometry
https://repo.qst.go.jp/records/85056
https://repo.qst.go.jp/records/85056203d56c6-1b39-47bc-a1ac-fbd82294560e
| Item type | 会議発表用資料 / Presentation(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2022-01-13 | |||||
| タイトル | ||||||
| タイトル | Accurate measurement of 234U/238U and 235U/238U isotope ratio in water samples at picogram level using multi collector inductively couple plasma mass spectrometry | |||||
| 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 |
Murugan, Rajamanickam
× Murugan, Rajamanickam× Kavasi, Norbert× Sahoo, Sarata× Tatsuo, Aono× Murugan, Rajamanickam× Kavasi, Norbert× Sahoo, Sarata× Tatsuo, Aono |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Natural uranium comprises of three natural isotopes such as 238U, 235U and 234U with relative isotopic abundances of 99.27%, 0.72% and 0.0055%, respectively. The concentration of uranium in Japanese rivers water ranged from 0.13 to 590 pg mL-1 with a mean value of 54.7 pg mL-1, which is three magnitudes lower than World Health Organization (WHO) recommended value (30 µgL-1). Hence, the isotope ratios measurement of 234U/238U and 235U/238U in low concentrated water samples is a challenging task. The 234U/238U and 235U/238U isotope ratios were measured using a multicollector inductively coupled plasma mass spectrometry (MC-ICP-MS). The combination of 1012 Ohm resistor Faraday cup and Daly detectors are used for low abundance of 234U measurement. A standard solution containing 50 pg mL-1 of U was selected for accuracy and precision measurement of 234U/238U and 235U/238U isotope ratios. MC-ICP-MS coupled with desolvating nebulizer system could measure U isotope ratios at picogram level in ground water, river water, pond water and stream water from Fukushima prefecture. The DGA-normal extraction chromatography resin was used for the chemical separation of U from other elements in water samples. Further data will be present during presentation. |
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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 | 福島大学環境放射能研究所第8回成果報告会 | |||||
| 発表年月日 | ||||||
| 日付 | 2022-03-01 | |||||
| 日付タイプ | Issued | |||||
