WEKO3
アイテム
Precise determination of Pu isotopes in a newly certified seawater reference material IAEA-443 using isotope-dilution SF-ICP-MS
https://repo.qst.go.jp/records/64238
https://repo.qst.go.jp/records/642383b27a364-dbfc-4217-be1a-7bdb7124c06b
| Item type | 会議発表用資料 / Presentation(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2011-03-09 | |||||
| タイトル | ||||||
| タイトル | Precise determination of Pu isotopes in a newly certified seawater reference material IAEA-443 using isotope-dilution SF-ICP-MS | |||||
| 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 |
Zheng, Jian
× Zheng, Jian× Yamada, Masatoshi× 鄭 建× 山田 正俊 |
|||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | For the quality control of analytical data of anthropogenic radionuclides in marine environment, reference material is important for method development and validation. A series of reference materials for all important marine matrices, such as sediment, biota, seawater and suspended matter have been issued by IAEA for anthropogenic radionuclide analysis. Among them, IAEA-381 (seawater from the Irish Sea) was widely used for seawater analysis. Recently, IAEA produced a new Irish Sea seawater reference material, the IAEA-443, as the IAEA-381 has already been sold out. We participated the interlaboratory comparison tests organized by the IAEA Marine Environment Laboratory in Monaco for the certification of this new reference material. In order to obtain precise Pu isotope composition of Irish Sea water reference material, we analyzed the activities of 239Pu, 240Pu, 239+240Pu, 241Pu, the atom ratio of 240Pu/239Pu, and the activity ratio of 241Pu/239+240Pu by a highly sensitive isotope dilution SF-ICP-MS method combined with two-stage chromatographic separation and purification. Detailed results of Pu activity and isotope composition will be reported. With a mean chemical yield of 65 % for 242Pu tracer, we found that the experimentally established values for 239Pu, 240Pu, 241Pu and 239+240Pu activities are almost the same as those in the IAEA-381 seawater reference material. Regarding the 239+240Pu activity, we provided the most precise and accurate result among the twelve laboratories participated in the interlaboratory comparison. | |||||
| 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 | 第12回 「環境放射能」研究会 | |||||
| 発表年月日 | ||||||
| 日付 | 2011-03-10 | |||||
| 日付タイプ | Issued | |||||
