Acta Phys. -Chim. Sin. ›› 2015, Vol. 31 ›› Issue (Suppl): 49-53.doi: 10.3866/PKU.WHXB2014Ac11

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Preparation and Ultraviolet-Visible Absorption Spectra of Pu(III), Pu(IV) and Pu(VI) in Hydrochloric Acid

WU Hong-Ying, ZHONG Jing-Rong, LI Ying-Qiu, WANG Shao-Fei   

  1. China Academy of Engineering Physics, Mianyang 621900, Sichuan Province, P. R. China
  • Published:2015-05-20
  • Contact: ZHONG Jing-Rong
  • Supported by:

    The project was supported by the Environmental Science Foundation of China Academy of Engineering Physics (HJ2014-3).


We describe the preparation of single-valence solutions of Pu and the identification of Pu ions with different valences via their ultraviolet-visible-near-infrared (UV-Vis-NIR) spectroscopic characteristics. The optimal experimental conditions were established, and then three types of Pu stock solution, i.e., Pu(III), Pu(IV), and Pu(VI), were prepared by redox reactions in HCl solution. We investigated their UV- Vis absorption spectroscopic properties. The characteristic absorption peaks were identified for Pu(III) (560, 600, 665, 900 nm), Pu(IV) (470, 550, 660, 795 nm), and Pu(VI) (835, 950, 990 nm). We used these results to develop a method for identifying Pu ions via their characteristic absorption peaks. The conclusions are in accordance with those reported in previous work, and provide a new technique for subsequent research.

Key words: Hydrochloric acid, Pu(III), Pu(IV), Pu(VI), Preparation, Ultraviolet absorptive spectrum, Optical fiber photometer


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