irm-LC/MS: δ13C Analysis of Dissolved Organic Matter in Natural Waters
Patrick Albéric (1), Pascale Gautret (1), Dieter Juchelka (2)
1) Institut des Sciences de la Terre d‘Orléans, CNRS/Université d‘Orléans, France; 2) Thermo Fisher Scientific, Bremen, Germany
AN30198
The isotopic composition of DOM and DOC can now be measured by the Thermo Scientific LC IsoLink, the on-line coupling of a liquid chromatograph with an isotope mass spectrometer. With the LC IsoLink™ interface, two approaches are possible: DOC δ13C can be measured either by direct flow injection of water samples (as well as of fractions isolated off-line from larger volumes of water) or, alternatively, for on-line separation of DOM fractions size exclusion chromatography (SEC) for instance can be applied.
- IRMS
- HPLC
- Carbon isotopes
- DOM
United States
