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Radiochimica Acta

International Journal for chemical aspects of nuclear science and technology

Editor-in-Chief: Qaim, Syed M.


IMPACT FACTOR 2018: 1.339

CiteScore 2018: 1.20

SCImago Journal Rank (SJR) 2018: 0.333
Source Normalized Impact per Paper (SNIP) 2018: 0.720

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ISSN
2193-3405
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Volume 101, Issue 3

Issues

Approach to on-line monitoring of PUREX process using chemometric processing of the optical spectral data

Dmitry O. Kirsanov / V. Babain / M. Agafonova-Moroz / A. Lumpov / A. Legin
  • St. Petersburg State University, Chemistry Department, Saint Petersburg, 199034, Russische Föderation
  • Other articles by this author:
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Published Online: 2012-11-20 | DOI: https://doi.org/10.1524/ract.2013.2009

Abstract

Optical spectroscopic measurements in the UV-Vis and IR ranges were performed in model solutions of aqueous and organic phases of the PUREX process for spent nuclear fuel (SNF) reprocessing. Chemometric processing of the spectral data with PLS (partial least squares) regression allowed simultaneous quantification of several key components (uranium, neptunium, plutonium, nitric acid) in these mixtures in an effective and elegant way. The content of all key components was quantitively determined with mean relative errors not exceeding 10%. It was shown that the employment of the whole spectra or their certain continuous regions for a PLS calibration enables to decrease the analytical errors compared to the use of a single wavelength in an ordinary least squares approach. The results of this research imply that the development of on-line techniques for SNF reprocessing monitoring is fully possible and can be based on optical spectroscopy methods combined with multivariate data processing techniques.

Keywords: UV-Vis spectroscopy; IR spectroscopy; SNF reprocessing; Chemometrics; PUREX process

About the article

* Correspondence address: Saint-Petersburg State University, Chemistry Department, Universitetskaya nab. 7/9, Mendeleev Center, 199034 St. Petersburg, Russische Föderation,


Published Online: 2012-11-20

Published in Print: 2013-03-01


Citation Information: Radiochimica Acta International journal for chemical aspects of nuclear science and technology, Volume 101, Issue 3, Pages 149–154, ISSN (Print) 2193-3405 , DOI: https://doi.org/10.1524/ract.2013.2009.

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