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claudia-bouman
Team TFS
Team TFS
Indirect gold trap–MC-ICP-MS coupling for Hg stable isotope analysis using a syringe injection interface
Jeroen E. Sonke, Thomas Zambardi and Jean-Paul Toutain
Observatoire Midi-pyrénées, Laboratoire des Mécanismes et Transferts en Géologie, CNRS/IRD/Université Paul Sabatier Toulouse 3, 14 avenue Edouard Belin, Toulouse, 31400, France
Journal of Analytical Atomic Spectrometry (2008), V23, pp569–573, doi: 10.1039/b718181g
Gold traps are part of standard instrumentation to quantitatively pre-concentrate gaseous elemental mercury, Hg0 (g), and are a pre-requisite for atmospheric Hg0 (g) analysis. High precision mercury stable isotope ratio analysis by on-line coupling of gold traps to multi collector-inductively coupled plasma mass spectrometry (MC-ICP-MS) has up to now been problematic due to the transient nature of the signal. We present a new off-line technique, where amalgamated elemental Hg0 is volatilized from the gold trap in an argon gas stream and temporarily stored in a large volume gas tight syringe.
  • MC-ICPMS
  • Neptune
  • Hg isotopes
  • Gold trap
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