Over het archief
Het OWA, het open archief van het Waterbouwkundig Laboratorium heeft tot doel alle vrij toegankelijke onderzoeksresultaten van dit instituut in digitale vorm aan te bieden. Op die manier wil het de zichtbaarheid, verspreiding en gebruik van deze onderzoeksresultaten, alsook de wetenschappelijke communicatie maximaal bevorderen.
Dit archief wordt uitgebouwd en beheerd volgens de principes van de Open Access Movement, en het daaruit ontstane Open Archives Initiative.
Basisinformatie over ‘Open Access to scholarly information'.
Analytical artefacts preclude reliable isotope ratio measurement of internal water in coral skeletons
de Graaf, S.; Vonhof, H.B.; Reijmer, J.J.G.; Feenstra, E.; Mienis, F.; Prud'homme, C.; Zinke, J.; van der Lubbe, J.H.J.L.; Swart, P.K.; Haug, G.H. (2022). Analytical artefacts preclude reliable isotope ratio measurement of internal water in coral skeletons. Geostand. Geoanal. Res. 46(3): 563-577. https://dx.doi.org/10.1111/ggr.12445
In: Geostandards and Geoanalytical Research. International Association of Geoanalysts/Wiley: Vandoeuvre-lès-Nancy. ISSN 1639-4488; e-ISSN 1751-908X, meer
|   |
| Trefwoord |
|
| Author keywords |
isotope ratio measurement; fluid inclusion water; biogenic minerals; corals; IRMS; CRDS. |
| Auteurs | | Top |
- de Graaf, S.
- Vonhof, H.B.
- Reijmer, J.J.G.
- Feenstra, E.
|
- Mienis, F., meer
- Prud'homme, C.
- Zinke, J.
|
- van der Lubbe, J.H.J.L.
- Swart, P.K.
- Haug, G.H.
|
| Abstract |
Internal water in cold-water and tropical coral skeletons was extracted and measured for its oxygen and hydrogen isotope ratios. Water was extracted by crushing pieces of coral hard tissue in a percussion device connected to either a cavity-ring down spectroscopy (CRDS) system or an isotope ratio mass spectrometry (IRMS) system. Despite most samples yielding sufficient water, each analytical system produces distinct isotope patterns. Experiments show that several characteristics specific to biominerals give rise to discrepancies and analytical artefacts that preclude the acquisition of reproducible isotope data. The main complication is that internal water in biogenic carbonates is distributed in an open interconnected micro-network that readily exchanges with external water and potentially facilitates interaction with hydration water in the finely dispersed organic matrix in the coral skeleton. Furthermore, only an isotopically fractionated part of the internal water is released from the coral skeletons upon crushing. Altogether, isotope ratio measurement of internal water in corals with bulk crushing techniques does not give primary fluid isotope ratios useful for (palaeo-)environmental or microbiological studies. As the resulting isotope patterns can show systematic behaviour per technique, isotope data may be erroneously interpreted to reflect the original calcifying fluid when using only a single technique to isotopically characterise internal fluids in coral skeletons. |
IMIS is ontwikkeld en wordt gehost door het VLIZ.
