Origin assessment of uranium ore concentrates based on their rare-earth elemental impurity pattern

2010 ◽  
Vol 98 (12) ◽  
Author(s):  
Zsolt Varga ◽  
Maria Wallenius ◽  
Klaus Mayer
Keyword(s):  
Rare Earth ◽  
Uranium Ore ◽  
Origin Assessment

scholarly journals Application of neodymium isotope ratio measurements for the origin assessment of uranium ore concentrates

Talanta ◽  
2014 ◽  
Vol 129 ◽  
pp. 499-504 ◽  
Author(s):  
Judit Krajkó ◽  
Zsolt Varga ◽  
Ezgi Yalcintas ◽  
Maria Wallenius ◽  
Klaus Mayer
Keyword(s):  
Isotope Ratio ◽  
Uranium Ore ◽  
Origin Assessment ◽  
Isotope Ratio Measurements

Application of Lead and Strontium Isotope Ratio Measurements for the Origin Assessment of Uranium Ore Concentrates

2009 ◽  
Vol 81 (20) ◽  
pp. 8327-8334 ◽  
Author(s):  
Zsolt Varga ◽  
Maria Wallenius ◽  
Klaus Mayer ◽  
Elizabeth Keegan ◽  
Sylvain Millet
Keyword(s):  
Isotope Ratio ◽  
Strontium Isotope ◽  
Uranium Ore ◽  
Strontium Isotope Ratio ◽  
Origin Assessment ◽  
Isotope Ratio Measurements

Measurement of the sulphur isotope ratio (34S/32S) in uranium ore concentrates (yellow cakes) for origin assessment

2013 ◽  
Vol 28 (12) ◽  
pp. 1919 ◽  
Author(s):  
Sun-Ho Han ◽  
Zsolt Varga ◽  
Judit Krajkó ◽  
Maria Wallenius ◽  
Kyuseok Song ◽  
...  
Keyword(s):  
Isotope Ratio ◽  
Sulphur Isotope ◽  
Uranium Ore ◽  
Origin Assessment

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

Minerals ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 55 ◽  
Author(s):  
Veronica C. Bradley ◽  
Benjamin T. Manard ◽  
Benjamin D. Roach ◽  
Shalina C. Metzger ◽  
Kayron T. Rogers ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Rare Earth ◽  
Rare Earth Elements ◽  
Inductively Coupled Plasma ◽  
High Performance ◽  
Isotope Dilution Mass Spectrometry ◽  
Standard Addition ◽  
Element Determination ◽  
Uranium Ore ◽  
Icp Ms

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.

scholarly journals Rare earth elements in uranium ore deposits from Namibia: A nuclear forensics tool

2021 ◽  
Vol 237 ◽  
pp. 106668
Author(s):  
Dakalo Madzunya ◽  
Vera Uushona ◽  
Manny Mathuthu ◽  
Wanke Heike
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Nuclear Forensics ◽  
Ore Deposits ◽  
Uranium Ore

scholarly journals Analysis of uranium ore concentrates for origin assessment

2011 ◽  
Vol 1 (1) ◽  
pp. 27-30 ◽  
Author(s):  
Zsolt Varga ◽  
Maria Wallenius ◽  
K. Mayer ◽  
M. Meppen
Keyword(s):  
Impurity Content ◽  
Nuclear Safeguards ◽  
Infrared Spectrometry ◽  
Ratio Analysis ◽  
Characteristic Parameters ◽  
Uranium Ore ◽  
Rare Earth Pattern ◽  
Isotope Ratio Analysis ◽  
Nuclear Forensic ◽  
Origin Assessment

AbstractIn this study the most important analytical methodologies are presented for the nuclear forensic investigation of uranium ore concentrates (yellow cakes). These methodologies allow to measure characteristic parameters which may be source material or process inherited. By the combination of the various techniques (e.g. infrared spectrometry, impurity content, rare-earth pattern and U, Sr and Pb isotope ratio analysis by mass spectrometry), the possible provenances of the illicit material can be narrowed down to a few options and its declared origin can be verified. The methodologies serve for nuclear forensic investigations as well as for nuclear safeguards, checking the consistency of information.

scholarly journals Abundance of fissiongenic and pre-reactor natural rare-earth elements in a uranium ore sample from Oklo.

1988 ◽  
Vol 22 (2) ◽  
pp. 47-54 ◽  
Author(s):  
Hiroshi Hidaka ◽  
Akimasa Masuda ◽  
Isao Fujii ◽  
Hiroshi Shimizu
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Uranium Ore
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