Absorption Spectroscopy for Quantitative Prediction of Lanthanide Concentrations in the 3LiCl – 2CsCl Eutectic at 723 K

Schroll, Cynthia A.; Lines, Amanda M.; Heineman, William R.; Bryan, Samuel A.

doi:10.1039/C6AY01520D

Absorption Spectroscopy for Quantitative Prediction of Lanthanide Concentrations in the 3LiCl – 2CsCl Eutectic at 723 K

Journal Article · Fri Jan 01 04:00:00 EST 2016 · Analytical Methods

DOI:https://doi.org/10.1039/C6AY01520D· OSTI ID:1490332

Schroll, Cynthia A. ^[1]; Lines, Amanda M. ^[2]; Heineman, William R. ^[1]; Bryan, Samuel A. ^[2]

Department of Chemistry; University of Cincinnati; Cincinnati; USA
Energy and Environment Directorate; Pacific Northwest National Laboratory; Richland; USA

This paper will be submitted to the ACS journal, Analytical Chemistry. Abstract. The absorption spectra for single component mixtures of erbium(III) chloride, holmium(III) chloride, neodymium(III) chloride, praseodymium(III) chloride, samarium(III) chloride and thulium(III) chloride were obtained in 3 LiCl – 2 CsCl at 723 K. The absorption spectra were collected at various concentrations from 0 mM to approximately 200 mM (above which the solutions became saturated). Using this data and Beer’s law, molar absorptivities for the absorbance peaks for each lanthanide(III) chloride were obtained. Using the collection of single component spectra, multivariate regression models were created for each lanthanide metal studied. These models were validated against a new set of absorption spectra containing multicomponent mixtures of the selected lanthanides in the molten salt solution. Results of the regression models and predictions on the validation set of data are presented.

Research Organization:: Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)

Sponsoring Organization:: USDOE

DOE Contract Number:: AC05-76RL01830

OSTI ID:: 1490332

Report Number(s):: PNNL-SA-111769

Journal Information:: Analytical Methods, Journal Name: Analytical Methods Journal Issue: 43 Vol. 8; ISSN AMNECT; ISSN 1759-9660

Publisher:: Royal Society of Chemistry

Country of Publication:: United States

Language:: English

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