Approach to on-line monitoring of PUREX process using chemometric processing of the optical spectral data
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Dmitry O. Kirsanov
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.
© by Oldenbourg Wissenschaftsverlag, München, Germany
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Artikel in diesem Heft
- Thermodynamics of Np(IV) complexes with gluconic acid under alkaline conditions: sorption studies
- Interaction of uranium(VI) with bioligands present in human biological fluids: the case study of urea and uric acid
- Approach to on-line monitoring of PUREX process using chemometric processing of the optical spectral data
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- Solid phase extraction of trivalent actinides and lanthanides using a novel CMPO-RTIL based chromatographic resin
- Stability studies of N,N,N´,N´-tetra-(2-ethylhexyl) dithiodiglycolamide (DTDGA)
- The effect of fluoride and silicate ions on the coprecipitation of gadolinium with calcium in phosphoric and sulpho-phosphoric media
- An electrochemical technique to prepare 55Fe source for the calibration of the X-ray detectors
- A novel and facile approach for the preparation of 133Ba source core, encapsulation and quality evaluation
