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 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

Sulphur isotope variations in diagenetic pyrite from core plug to sub-millimetre scales

Clay Minerals ◽  
2000 ◽  
Vol 35 (1) ◽  
pp. 303-311 ◽  
Author(s):  
P. McConville ◽  
A. J. Boyce ◽  
A. E. Fallick ◽  
B. Harte ◽  
E. M. Scott
Keyword(s):  
Isotope Ratio ◽  
Ion Microprobe ◽  
Sulphur Isotope ◽  
Rayleigh Fractionation ◽  
Laser Microprobe ◽  
Wide Range ◽  
Fractionation Pattern ◽  
Northern North Sea ◽  
Isotope Ratio Measurements ◽  
S Isotope

AbstractSulphur isotope ratio measurements (δ34S) of diagenetic pyrite are commonly used to identify S sources and mechanisms of sulphide formation in basinal sediments. This study reports such data for a diagenetic pyrite nodule from the Brent Group sandstones of the northern North Sea at three sampling scales: 50 cm (core subsample), 500 μm (laser microprobe) and 50 μm (ion microprobe). Similar δ34S variations are found by the laser and ion microprobe techniques. There is a very wide range in δ34S (<−10% to >+50%) within the nodule and isotopically heavy S (δ34S >+20%) is common at all scales. The nodule δ34S distribution does not fit a Rayleigh fractionation pattern. The laser microprobe sampling at 100–500 μm scales seems to be adequate to characterize S isotope variations in this material.

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 Measurement and validation of uranium isotope ratio in uranium ore for isotopic fingerprinting

2017 ◽  
Vol 40 (1) ◽  
pp. 3 ◽  
Author(s):  
Suchismita Mishra ◽  
SarataKumar Sahoo ◽  
Probal Chaudhury ◽  
KS Pradeepkumar
Keyword(s):  
Isotope Ratio ◽  
Uranium Isotope ◽  
Uranium Ore ◽  
Isotopic Fingerprinting
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