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- Honda Maki
- Graduate School of Pure and Applied Sciences University of Tsukuba
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- Takaku Yuichi
- Institute for Environmental Sciences
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- Shikamori Yasuyuki
- Agilent Technologies, Chemical Analysis, Japan Application Center
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- Matsuzaki Hiroyuki
- Micro Analysis Laboratory, Tandem accelerator (MALT), The University Museum, The University of Tokyo
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- Sueki Keisuke
- Faculty of Pure and Applied Sciences, University of Tsukuba
抄録
<p>Accelerator mass spectrometry (AMS) has been recognized as the most sensitive analytical method for the isotopic ratio 129I/127I, and its limit of detection reaches as low as 129I/127I < 2×10-14. Recently triple quadrupole ICP-MS (ICP-MS/MS) is becoming an alternative analytical method for the rather high isotopic ratio range, 129I/127I > 10-8. Absolute ICP-MS/MS measurements require reliable standard materials for calibration. In this study, 129I standard solutions “tRIC-1” and “tRIC-2” were prepared from a laboratory-stored 129I solution and the 129I radioactivity standard of NIST SRM 4949d, respectively. The isotopic ratios of 129I/127I were determined to be (6.54 ± 0.23) × 10-5 for tRIC-1 and (3.41 ± 0.12) × 10-6 for tRIC-2 from the measurement results of AMS (129I/127I ratio) and ICP-MS/MS (127I concentration). From the 129I and 127I concentrations each calibration line in ICP-MS/MS was used to calculate the 129I/127I isotopic ratios which were (6.51 ± 0.26) × 10-5 for tRIC-1 and (3.34 ± 0.13) × 10-6 for tRIC-2. These isotopic ratios of 129I/127I agree with the value from AMS. It was proved that the two home-made standard solutions could be measured using the latest ICP-MS/MS and reliable isotopic ratios of 129I/127I were obtained.</p>
収録刊行物
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- Journal of Nuclear and Radiochemical Sciences
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Journal of Nuclear and Radiochemical Sciences 18 (0), 1-4, 2018
日本放射化学会
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詳細情報 詳細情報について
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- CRID
- 1390282763101203072
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- NII論文ID
- 130007606237
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- ISSN
- 18835813
- 13454749
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可