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Volume 10
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10.3390/min10010055
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Article

Rare Earth Element Determination in Uranium Ore Concentrates Using Online and Offline Chromatography Coupled to ICP-MS

by
Veronica C. Bradley
1,2,
Benjamin T. Manard
1,*,
Benjamin D. Roach
1,
Shalina C. Metzger
1,
Kayron T. Rogers
1,
Brian W. Ticknor
1,
Sarah K. Wysor
1,
John D. Brockman
2 and
Cole R. Hexel
1
1
Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37830, USA
2
Chemistry Department, University of Missouri, Columbia, MO 65211, USA
*
Author to whom correspondence should be addressed.
Minerals 2020, 10(1), 55; https://doi.org/10.3390/min10010055
Submission received: 17 December 2019 / Revised: 3 January 2020 / Accepted: 4 January 2020 / Published: 8 January 2020
(This article belongs to the Special Issue Nuclear Forensic Applications in Geoscience and Radiochemistry)
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Abstract

The determination of trace elements, particularly rare earth elements, in uranium ore concentrates (UOCs) is important as the pattern can be indictive ore characteristics. Presented here is a methodology for accurately quantifying rare earth elements (REE) in UOCs. To improve the measurement uncertainty, isotope dilution mass spectrometry (IDMS) was utilized over other quantification techniques such as external calibration or standard addition. The isotopic determinations were measured by inductively coupled plasma-mass spectrometry (ICP-MS). To obtain high-fidelity isotopic measurements, separation of the REE from the uranium matrix was achieved by high-performance ion chromatography (HPIC), reducing the isobaric interferences. After separation, the target analytes were analyzed in two different modalities. For high precision analysis, the separated analytes were collected and measured by ICP-MS in an “offline” fashion. For a rapid approach, the separated analytes were sent directly into an ICP-MS for “online” analysis. These methods have been demonstrated to accurately quantify the REE content in a well-characterized UOC sample.
Keywords: uranium ore concentrate; ICP-MS; isotope dilution mass spectrometry; ion chromatography uranium ore concentrate; ICP-MS; isotope dilution mass spectrometry; ion chromatography

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MDPI and ACS Style

Bradley, V.C.; Manard, B.T.; Roach, B.D.; Metzger, S.C.; Rogers, K.T.; Ticknor, B.W.; Wysor, S.K.; Brockman, J.D.; Hexel, C.R. Rare Earth Element Determination in Uranium Ore Concentrates Using Online and Offline Chromatography Coupled to ICP-MS. Minerals 2020, 10, 55. https://doi.org/10.3390/min10010055

AMA Style

Bradley VC, Manard BT, Roach BD, Metzger SC, Rogers KT, Ticknor BW, Wysor SK, Brockman JD, Hexel CR. Rare Earth Element Determination in Uranium Ore Concentrates Using Online and Offline Chromatography Coupled to ICP-MS. Minerals. 2020; 10(1):55. https://doi.org/10.3390/min10010055

Chicago/Turabian Style

Bradley, Veronica C., Benjamin T. Manard, Benjamin D. Roach, Shalina C. Metzger, Kayron T. Rogers, Brian W. Ticknor, Sarah K. Wysor, John D. Brockman, and Cole R. Hexel. 2020. "Rare Earth Element Determination in Uranium Ore Concentrates Using Online and Offline Chromatography Coupled to ICP-MS" Minerals 10, no. 1: 55. https://doi.org/10.3390/min10010055

APA Style

Bradley, V. C., Manard, B. T., Roach, B. D., Metzger, S. C., Rogers, K. T., Ticknor, B. W., Wysor, S. K., Brockman, J. D., & Hexel, C. R. (2020). Rare Earth Element Determination in Uranium Ore Concentrates Using Online and Offline Chromatography Coupled to ICP-MS. Minerals, 10(1), 55. https://doi.org/10.3390/min10010055

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