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Determination of uranium and its isotopic composition in human hair by microwave digestion and inductively coupled plasma mass spectrometry
https://repo.qst.go.jp/records/68638
https://repo.qst.go.jp/records/68638525fa0a7-b929-48b9-b41e-41bf84f3c71b
| Item type | 会議発表用資料 / Presentation(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2006-09-08 | |||||
| タイトル | ||||||
| タイトル | Determination of uranium and its isotopic composition in human hair by microwave digestion and inductively coupled 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 |
Sarata, Kumar Sahoo
× Sarata, Kumar Sahoo× サフー サラタ クマール |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | The determination of trace elements in hair has been a subject of continual interest from the viewpoint of biomedical and environmental sciences. However, the level of the elements in normal population should be established. Determination of uranium and its isotope ratios is required in environmental monitoring of nuclear contamination in nuclear safeguards, nuclear accidents and nuclear forensic medicines. 238U, 235U and 234 U are naturally occurring alpha-emitting long-lived radionuclides which are taken up daily at low levels with food and drinking water. A microwave-assisted digestion procedure with nitric acid and hydrogen peroxide of the hair has been developed. The uranium concentration in the diluted sample was determined using ICP-MS and limit of detection was 0.01ng/g for a 50 mg of sample. Natural isotopic composition of 235U/238U =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 and 235U/238U were measured by using a VG Sector 54 thermal ionization mass spectrometer (TIMS) equipped with a WARP Filter. Precision of 235U/238U ratio was achieved by a correction factor of 0.35% amu as a function of intensity with sample loads of 100 ng of U. | |||||
| 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 | 17th International Mass Spectrometry Conference | |||||
| 発表年月日 | ||||||
| 日付 | 2006-09-01 | |||||
| 日付タイプ | Issued | |||||
