Measurement and Instrumentation in Stable Isotope Geochemistry





Nos spectromètres de masse

The precise and accurate measurement of isotopic abundances of light elements such as C, N, O, S, H, Cl, Br... requires a transformation of the considered element into a gas molecule (e.g. N₂ for nitrogen, CH₃Cl for chlorine), before analysis using gas source mass spectrometry.

Our laboratory is equipped with 6 gas source mass spectrometer (another should be delivered in the next few years):

• 2 mass spectrometer Thermo-Fisher MAT-253 (since 2006 and 2010, respectively)
• 1 mass spectrometer Thermo-Fisher Delta + XP (since 2002)
• 1 mass spectrometer Thermo-Fisher Delta V (since 2013)
• 1 rare gas-type mass spectrometer functionning in static mode (build by our team in the 90s).
• 1 helium continuous flow mass spectrometer (AP2003)
• 1 high-resolution gas source mass spectrometer (Thermo-Fisher MAT 253 ULTRA, since 2016).

13 vacuum lines allowing extraction, gas reactions, purification and quantification of the element under consideration.

Various devices and equipments (Gas Bench, Flash-EA, GC-C), infra-red spectrometer (Thermo Nicolet 550), Micro-Milling system (New Wave Research), furnaces, induction heating system, IR and UV laser...

Many other equipments are also available in other research teams of our Institute.

We thank our numerous partners for financial supports (e.g. CNRS, La Région Ile-de-France, Total, Schlumberger, ADEME, Mairie de Paris, University Paris-Diderot and Institut de Physique du Globe).