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claudia-bouman
Team TFS
Team TFS
Department of Earth Science & Engineering, Imperial College London, London SW7 2AZ, UK
Analytica Chimica Acta (2015), V863, pp59–69, doi: 10.1016/j.aca.2014.12.012
High-precision measurements of seawater Pb isotope compositions by double spike thermal ionization mass spectrometry
Maxence Paul, Luke Bridgestock, Mark Rehkämper, Tina van DeFlierdt, Dominik Weiss
A new method for the determination of seawater Pb isotope compositions and concentrations was developed, which combines and optimizes previously published protocols for the separation and isotopic analysis of this element. For isotopic analysis, the procedure involves initial separation of Pb from 1 to 2 L of seawater by co-precipitation with Mg hydroxide and further purification by a two stage anion exchange procedure. The Pb isotope measurements are subsequently carried out by thermal ionization mass spectrometry using a 207Pb–204Pb double spike for correction of instrumental mass fractionation.
  • TIMS
  • Triton
  • Pb isotopes
  • GEOTRACES
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