Extraction chromatographic separations of tantalum and tungsten from hafnium and complex matrix constituents
Abstract
Ta, Hf, and W analyses from complex matrices (including environmental samples) require high purification of these analytes from each other and major/trace matrix constituents, but, current state-of-the-art Ta/Hf/W separations rely on traditional anion exchange approaches that suffer from relatively similar distribution coefficient (Kd) values for these analytes. Our work reports assessment of three commercially available extraction chromatographic resins (TEVA, TRU, and UTEVA) for Ta/Hf/W separations. Batch contact studies show differences in Ta/W,Hf Kd values of up to 106, representing an improvement of a factor of 100 and 300 in Ta/Hf and Ta/W Kd values (respectively) over AG1x4 resin. Furthermore, variations in the Kd values as a function of HCl concentration for TRU resin show that this resin is well suited for Ta/Hf/W separations, with Ta/Hf, Ta/W, and W/Hf Kd value improvements of 10, 200, and 30 (respectively) over AG1x4 resin. Finally, analyses of digested soil samples (NIST 2710a) using TRU resin and tandem TEVA-TRU columns demonstrate the ability to achieve extremely high purification (>99%) of Ta and W from each other and Hf, as well as enabling very high purification of Ta and W from the major and trace elemental constituents present in soils, using a single chromatographic step.
- Authors:
-
- Idaho National Lab. (INL), Idaho Falls, ID (United States)
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
- Publication Date:
- Research Org.:
- Idaho National Lab. (INL), Idaho Falls, ID (United States)
- Sponsoring Org.:
- USDOE Office of Nuclear Energy (NE)
- OSTI Identifier:
- 1357615
- Report Number(s):
- INL/JOU-16-38216
Journal ID: ISSN 0021-9673; PII: S0021967317300547
- Grant/Contract Number:
- AC07-05ID14517; IAA HDTRA1618618
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of Chromatography
- Additional Journal Information:
- Journal Volume: 1484; Journal Issue: C; Journal ID: ISSN 0021-9673
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 07 ISOTOPE AND RADIATION SOURCES; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; Anion Exchange; Separation; Tantalum; TEVA; TRU; Tungsten
Citation Formats
Snow, Mathew S., Finck, Martha R., Carney, Kevin P., and Morrison, Samuel S. Extraction chromatographic separations of tantalum and tungsten from hafnium and complex matrix constituents. United States: N. p., 2017.
Web. doi:10.1016/j.chroma.2017.01.019.
Snow, Mathew S., Finck, Martha R., Carney, Kevin P., & Morrison, Samuel S. Extraction chromatographic separations of tantalum and tungsten from hafnium and complex matrix constituents. United States. https://doi.org/10.1016/j.chroma.2017.01.019
Snow, Mathew S., Finck, Martha R., Carney, Kevin P., and Morrison, Samuel S. Sun .
"Extraction chromatographic separations of tantalum and tungsten from hafnium and complex matrix constituents". United States. https://doi.org/10.1016/j.chroma.2017.01.019. https://www.osti.gov/servlets/purl/1357615.
@article{osti_1357615,
title = {Extraction chromatographic separations of tantalum and tungsten from hafnium and complex matrix constituents},
author = {Snow, Mathew S. and Finck, Martha R. and Carney, Kevin P. and Morrison, Samuel S.},
abstractNote = {Ta, Hf, and W analyses from complex matrices (including environmental samples) require high purification of these analytes from each other and major/trace matrix constituents, but, current state-of-the-art Ta/Hf/W separations rely on traditional anion exchange approaches that suffer from relatively similar distribution coefficient (Kd) values for these analytes. Our work reports assessment of three commercially available extraction chromatographic resins (TEVA, TRU, and UTEVA) for Ta/Hf/W separations. Batch contact studies show differences in Ta/W,Hf Kd values of up to 106, representing an improvement of a factor of 100 and 300 in Ta/Hf and Ta/W Kd values (respectively) over AG1x4 resin. Furthermore, variations in the Kd values as a function of HCl concentration for TRU resin show that this resin is well suited for Ta/Hf/W separations, with Ta/Hf, Ta/W, and W/Hf Kd value improvements of 10, 200, and 30 (respectively) over AG1x4 resin. Finally, analyses of digested soil samples (NIST 2710a) using TRU resin and tandem TEVA-TRU columns demonstrate the ability to achieve extremely high purification (>99%) of Ta and W from each other and Hf, as well as enabling very high purification of Ta and W from the major and trace elemental constituents present in soils, using a single chromatographic step.},
doi = {10.1016/j.chroma.2017.01.019},
journal = {Journal of Chromatography},
number = C,
volume = 1484,
place = {United States},
year = {Sun Jan 08 00:00:00 EST 2017},
month = {Sun Jan 08 00:00:00 EST 2017}
}
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Works referencing / citing this record:
Extraction-chromatographic behavior of Zr(IV) and Hf(IV) on TRU and LN resins in mixtures of HNO3 and HF
journal, June 2019
- Ekatova, Taisya Yu.; Kazakov, Andrey G.
- Journal of Radioanalytical and Nuclear Chemistry, Vol. 321, Issue 2
An improved extraction chromatographic purification of tungsten from a silicate matrix for high precision isotopic measurements using MC-ICPMS
journal, January 2018
- Mei, Qing-Feng; Yang, Jin-Hui; Yang, Yue-Heng
- Journal of Analytical Atomic Spectrometry, Vol. 33, Issue 4