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Team TFS
Team TFS
Laboratoire de Géologie de Lyon, Ecole Normale Supérieure de Lyon, Université de Lyon, CNRS, UMR 5276, 46 allée d'Italie, F-69364 Lyon Cedex, France
Journal of Analytical Atomic Spectrometry (2014),V29, pp2284-2293, doi: 10.1039/c4ja00184b
High-precision measurements of tungsten stable isotopes and application to earth sciences
Thomas Breton and Ghylaine Quitté
We here present an improved separation procedure based on anion-exchange chromatography that allows achieving quantitative recovery of W. Taking advantage of the last generation of multi-collector inductively coupled plasma mass-spectrometers (MC-ICPMS), we also set up a method to analyze W mass-dependent isotope fractionation with an external reproducibility better than 80 ppm and an internal reproducibility of 30 ppm. This new analytical procedure has been applied to igneous and iron-rich samples, from granites to chondrites and iron meteorites. Isotope variations observed for natural samples are well resolvable and vary from 0.05 to +0.36 per mil per mass unit.
  • Neptune Plus
  • W isotopes
  • Igneous samples
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‎11-09-2021 04:13 AM
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