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claudia-bouman
Team TFS
Team TFS
1) ThermoFinnigan, Barkhausenstr. 2, D-28197 Bremen, Germany, 2) Frankfurt Institut für Mineralogie, Johann Wolfgang Goethe-Universität, Senckenberganlage 28, D-60054 Frankfurt, Germany
International Journal of Mass Spectrometry (2003), V226(3), pp355–368, doi: 10.1016/S1387-3806(03)00078-2
High precision Fe isotope measurements with high mass resolution MC-ICPMS
S. Weyer (1,2), J.B. Schwieters (1)
This study presents a new technique for high precision measurement of iron isotope ratios using high mass resolution MC-ICPMS on the ThermoFinnigan Neptune. A mass resolving power of about 8000–9000 was used to resolve the mass interferences of isobaric polyatomic ions (e.g., 40Ar16O+ on 56Fe+, 40Ar16OH+ on 57Fe+ and 40Ar14N+ on 54Fe+) from the Fe isotopes and to produce “flat top” peak shapes with a plateau width of about 100 ppm in mass ( m/m). The abundance sensitivity was determined to 50 ppm contribution of the 40Ar16O+ peak tail on the 56Fe+ peak.
  • MC-ICPMS
  • Neptune
  • Fe isotopes
  • High Mass Resolution
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