Platform Isotopie
The Isotopie platform carries out measurements of isotope ratios of light stable elements and elemental analyses of certain elements. This platform, managed by the PALEO team, provides UMR EPOC teams and external laboratories with access to the platform’s equipment, as well as assistance with instrument use and data processing.
The platform is part of the ‘Stable Spectrometry’ network of the RéGEF Research Infrastructure (‘Réseau Géochimique & Expérimental Français’).
Managers
Scientific leader
Bruno Malaizé
Technical manager
Karine Charlier
Applications / Expertises
Three species of planktonic foraminifera, two species of benthic foraminifera, coral, speleothem.
Measurements of δ18O + δ¹³C in solid carbonates
Samples :
- Calcareous shells of microfossils (e.g. foraminifera, ostracods).
- Fossil carbonate skeletons (e.g. corals).
- Calcareous concretions (e.g. speleothems).
- Calcareous macroshells (e.g. mussels).
- Carbonate rocks.
Measurements of δ15N and/or δ¹³C and/or δ³²S,
δD and/or δ18O(and %) in solid organic matter
Samples :
- Marine, lake or land sediments (e.g. marine cores).
- Animal tissues (e.g. collagen, fish muscles, zooplankton).
- Plants (e.g. zooplankton).
- Excreta (e.g. guano).
- Suspended matter on filter.
Section of marine core, eelgrass, suspended matter filter, hull.
Water flask with headspace, sample gas introduction system for DIC analysis.
Measurements of δ¹³C of dissolved inorganic carbon (DIC)
Samples :
- Water from rivers,
- lakes,
- oceans.
Instruments
Isotope mass spectrometer (IRMS) coupled to a carbonate preparation system
ThermoFisher MAT253 + KIEL IV Carbonate.
Isotope mass spectrometer (IRMS) coupled to two elemental analysers (EA)
ThermoFisher Delta Q + Flash 2000 + IsoLink.
