-
摘要: 经TOA萃取色层柱分离环境样品,2次上柱,将Np和Pu同时洗脱,239Pu的化学回收率为 (92.7±3.1)%,237Np为(96.8±2.7)%,实现了ICP-MS同时测定痕量Np和Pu的含量。应用稀释剂242Pu,通过同位素稀释ICP-MS法测量痕量239Pu和240Pu的含量,用IAEA标样对方法进行验证,Pu 的测定值与标样的推荐值吻合较好(标样中无Np的标准值),证明了ICP-MS同时测定痕量Np和Pu的可行性。
Abstract: A single TOA extraction chromatographic column with a twostage sample loading was used to separate Np and Pu from the environmental samples. Preliminary studies were performed to determine both Np and Pu by ICP-MS in one run. The 239Pu recovery of (92.7±3.1)% and 237Np recovery of (96.8±2.7)% in environmental samples were obtained. By spiking with 242Pu, isotope dilution ICP-MS was applied to measure 239Pu and 240Pu. The feasibility for the determination of both Pu and Np was proved by analyzing IAEA-135 reference samples. The measured values for Pu are in good agreement with recommended reference value (no Np standard value available).
-
-
[1] Lariviere D, Taylor V F, Evans R D, et al. Review: Radionuclide Determination in Environmental Samples by Inductively Coupled Plasma Mass Spectrometry[J]. Spectrochimica Acta Part B, 2006, 61: 877-904. [2] Sidhu R. Radchem 2005 -Radiochemical Analysis in Emergency and Routine Situations, NKS-129, ISBN 87-7893-191-6[M]. Norway: Institute for Energy Technology, 2006. [3] Ji Yanqin, Li Jinying, Luo Shanggeng, et al. Determination of Traces of 237Np in Environmental Samples by ICP-MS After Separation Using TOA Extraction Chromatography[J]. Fresenius’ J Anal Chem, 2001, 371: 49-53. [4] 吉艳琴,李金英,罗上庚. 放射化学分离结合ICP-MS法测量土壤样品中的钚[J].辐射防护,2008, 28(2): 72-78. [5] Kalmykov St N, Aliev R A, Sapozhnikov Yu D, et al. Determination of Np-237 by Radiochemical Neutron Activation Analysis Combined With Extraction Chromatography[J]. Appl Radiat Isot, 2004, 60: 595-599.
计量
- 文章访问数: 614
- HTML全文浏览量: 0
- PDF下载量: 3816