scholarly journals Characterization of a series of absolute isotope reference materials for magnesium: ab initio calibration of the mass spectrometers, and determination of isotopic compositions and relative atomic weights

2016 ◽  
Vol 31 (7) ◽  
pp. 1440-1458 ◽  
Author(s):  
Jochen Vogl ◽  
Björn Brandt ◽  
Janine Noordmann ◽  
Olaf Rienitz ◽  
Dmitriy Malinovskiy
Keyword(s):  
Ab Initio ◽  
Reference Materials ◽  
Isotope Ratios ◽  
Mass Spectrometers ◽  
Isotopic Compositions

Three different MC-ICPMS instruments were calibrated by means of synthetic isotope mixtures to enable absolute Mg isotope ratios with expanded uncertainties of ≤0.15‰.

Precise and Accurate Determination of Lu and Hf Contents, and Hf Isotopic Compositions in Chinese Rock Reference Materials by MC‐ICP‐MS

2020 ◽  
Vol 44 (3) ◽  
pp. 553-565 ◽  
Author(s):  
Ming Yang ◽  
Yue‐Heng Yang ◽  
Noreen J. Evans ◽  
Lie‐Wen Xie ◽  
Chao Huang ◽  
...  
Keyword(s):  
Reference Materials ◽  
Accurate Determination ◽  
Isotopic Compositions ◽  
Icp Ms

Determination of total uranium and uranium isotope ratios in human urine by ICP-MS:results of an interlaboratory study

2015 ◽  
Vol 30 (1) ◽  
pp. 126-138 ◽  
Author(s):  
John G. Arnason ◽  
Christine N. Pellegri ◽  
Patrick J. Parsons
Keyword(s):  
Reference Materials ◽  
Human Urine ◽  
Isotope Ratios ◽  
Uranium Isotope ◽  
Interlaboratory Study

Interlaboratory performance is reported for nine participants analyzing six well-characterized urine reference materials supplemented with 234U, 235U, 236U, and 238U.

scholarly journals Multivariate Analysis Based on Geochemical, Isotopic, and Mineralogical Compositions of Uranium-Rich Samples

Minerals ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 537 ◽  
Author(s):  
Loretta Corcoran ◽  
Antonio Simonetti ◽  
Tyler L. Spano ◽  
Stefanie R. Lewis ◽  
Corinne Dorais ◽  
...  
Keyword(s):  
Trace Element ◽  
Principal Component ◽  
Forensic Analysis ◽  
Isotopic Compositions ◽  
Mineral Assemblages ◽  
Multiple Variable ◽  
Geological Origin ◽  
Trace Element Contents

The chemical and isotopic (U, Pb, Sr) signatures for a suite (n = 23) of pristine (>80 wt. % UO2) and altered uraninite samples (>70–80 wt. % UO2) from various locations worldwide have been determined for the purpose of identifying potential fingerprints for nuclear forensic analysis. The characterization of the uraninite samples included determination of major, minor and trace element contents, Sr, Pb, and U isotopic compositions, and secondary mineral assemblages. Due to the multivariate approach adopted in this study, principal component analysis (PCA) has been employed to allow the direct comparison of multiple variable types. The PCA results indicate that the geological origin (sandstone, metamorphite, intrusive, granite and unconformity) of pristine uraninite can be readily identified utilizing various combinations of major and/or trace element concentrations with isotopic compositions.

scholarly journals Measurements of extinct fission products in nuclear bomb debris: Determination of the yield of the Trinity nuclear test 70 y later

2016 ◽  
Vol 113 (29) ◽  
pp. 8104-8108 ◽  
Author(s):  
Susan K. Hanson ◽  
Anthony D. Pollington ◽  
Christopher R. Waidmann ◽  
William S. Kinman ◽  
Allison M. Wende ◽  
...  
Keyword(s):  
Isotopic Composition ◽  
Fission Products ◽  
Nuclear Test ◽  
Isotopic Ratios ◽  
Nuclear Bomb ◽  
Isotopic Compositions ◽  
The Trinity

This paper describes an approach to measuring extinct fission products that would allow for the characterization of a nuclear test at any time. The isotopic composition of molybdenum in five samples of glassy debris from the 1945 Trinity nuclear test has been measured. Nonnatural molybdenum isotopic compositions were observed, reflecting an input from the decay of the short-lived fission products 95Zr and 97Zr. By measuring both the perturbation of the 95Mo/96Mo and 97Mo/96Mo isotopic ratios and the total amount of molybdenum in the Trinity nuclear debris samples, it is possible to calculate the original concentrations of the 95Zr and 97Zr isotopes formed in the nuclear detonation. Together with a determination of the amount of plutonium in the debris, these measurements of extinct fission products allow for new estimates of the efficiency and yield of the historic Trinity test.

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