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Isotope dilution sector-field inductively coupled plasma mass spectrometry combined with extraction chromatography for rapid determination of 241Am in marine sediment samples: a case study in Sagami bay, Japan
https://repo.qst.go.jp/records/45224
https://repo.qst.go.jp/records/45224e3268638-8990-4eb1-b20e-0e560648d5a6
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2008-07-16 | |||||
| タイトル | ||||||
| タイトル | Isotope dilution sector-field inductively coupled plasma mass spectrometry combined with extraction chromatography for rapid determination of 241Am in marine sediment samples: a case study in Sagami bay, Japan | |||||
| 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_6501 | |||||
| 資源タイプ | journal article | |||||
| 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 |
Zheng, Jian
× Zheng, Jian× Yamada, Masatoshi× 鄭 建× 山田 正俊 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | 241Am is a useful tracer in understanding biogeochemical processes in the marine environment. 241Am also poses a potential radiation threat against human health due to the continuous increase of its concentration in the global environment. We report a rapid analytical method for 241Am in marine sediments using isotope dilution sector-field inductively coupled plasma mass spectrometry (SF-ICP-MS) combined with a high-efficiency sample introduction system (APEX-Q). A selective CaF2 co-precipitation procedure followed by TRU extraction chromatography was employed to effectively remove the major sediment matrix and to pre-concentrate 241Am. We achieved an extremely low detection limit of 0.32 fg/g or 0.041 mBq/g (for 1 gram sediment), which is better than that of alpha spectrometry, and it allowed the accurate determination of 241Am in low-level marine sediment samples. The accuracy and precision of the developed analytical method was evaluated using a laboratory prepared Am isotope standard solution and Ocean Sediment reference material (IAEA-368) and the results were satisfactory. For sediment samples, overall, chemical recoveries varied from 60 - 90 %. The developed method was applied to the study of 241Am depth distribution in Sagami Bay, Japan, in which we observed different depth profiles between 241Am activity and 239+240Pu activity. | |||||
| 書誌情報 |
Journal of Oceanography 巻 64, 号 4, p. 541-550, 発行日 2008-08 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 0916-8370 | |||||
