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Licensed Unlicensed Requires Authentication Published by De Gruyter (O) May 26, 2022

An efficient method for the removal of Pb prior to the ultra-trace Am measurement by ICP-MS

  • Yufeng Wang , Jinlong Fan EMAIL logo , Xiufang Zhai , Zhiming Li , Qingjiang Yu , Weichao Zhang and Zhichao Liu
From the journal Radiochimica Acta


The existence of Pb which formed polyatomic ions such as PbCl+, PbAr+ would interfere the determination of ultra-trace Am by ICP-MS. An extraction chromatography method for the removal of Pb interference was provided in this work to improve the determination accuracy of ultra-trace Am by ICP-MS. In this study, Sr resin was applied to separate Am and Pb because of the great difference between Am and Pb on adsorption ability. The variable parameters including nitric acid concentration, loading volume, column height and loading amount were investigated to optimize the separation conditions for high recovery of Am (R(Am)) as well as high decontamination factor of Pb (DF(Pb)). The optimal separation method was recommended in the study with the recovery of Am over 99% and the decontamination factor of Pb over 2 × 105. Moreover, the method was successfully applied to the analysis of 241Am in the simulated samples.

Corresponding author: Jinlong Fan. Northwest Institute of Nuclear Technology, Xi’an, Shaanxi, 710024, China, E-mail:

  1. Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.

  2. Research funding: None declared.

  3. Conflict of interest statement: The authors declare no conflicts of interest regarding this article.


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Received: 2022-02-16
Accepted: 2022-05-11
Published Online: 2022-05-26
Published in Print: 2022-10-26

© 2022 Walter de Gruyter GmbH, Berlin/Boston

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