Analysis of chlorine isotope composition | INSTITUT DE PHYSIQUE DU GLOBE DE PARIS


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Research Departments

Stable isotope geochemistry

  Analysis of chlorine isotope composition

Chlorine isotope compositions (ratio 37Cl/35Cl) of many samples (fluids, gas, organic compounds, rocks) are routinely measured with high analytical precision of ±0.04‰ (1SD) for samples containing ≥20 µmol Cl.
The chlorine isotope analysis requires a transformation of chlorides dissolved in solution into gaseous CH3Cl, which is then analyzed on our mass spectrometer(Delta Plus XP, Delta V).

For rock samples, a first step consist in the extraction of Cl contained in the sample and its transformation into chlorides by pyrohydrolysis.

For further information, please contact Magali Bonifacie