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Team TFS
Team TFS
1) NIRVANA Laboratories, Woods Hole Oceanographic Institution, Woods Hole, USA, 2) Department of Geology and Geophysics, Woods Hole Oceanographic Institution, Woods Hole, USA, 3) Department of Marine Chemistry and Geochemistry, Woods Hole Oceanographic Institution, Woods Hole, USA
Journal of Analytical Atomic Spectrometry (2016),V31, pp531-536, doi: 10.1039/C5JA00397K
Analysis of high-precision vanadium isotope ratios by medium resolution MC-ICP-MS
Sune G. Nielsen (1,2), Jeremy D. Owens (1,2) and Tristan J. Horner (1,3)
We present and verify a new method to measure vanadium isotope ratios using a Thermo Scientific Neptune multi-collector inductively-coupled plasma mass spectrometer (MC-ICP-MS) operated in medium mass resolution mode. We collect masses 48 through 53 simultaneously using the L2, L1, Center, H1, H2 and H3 collectors. Unlike previous low-resolution methods, the use of medium mass resolution (ΔM/M ∼ 4000) permits separation of V, Ti and Cr isotopes from all interfering molecular species representing combinations of C, N, O, S, Cl, and Ar. We show that the external reproducibility follows a power law function with respect to the number of V+ ions collected and achieve an external reproducibility of ±0.15‰ with total V+ ion beam intensities of ∼1 nA.
  • Neptune
  • V isotopes
  • High resolution
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