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  Inter‐laboratory Characterisation of Apatite Reference Materials for Oxygen Isotope Analysis and Associated Methodological Considerations

Wudarska, A., Wiedenbeck, M., Słaby, E., Lempart‐Drozd, M., Harris, C., Joachimski, M. M., Lécuyer, C., MacLeod, K. G., Pack, A., Vennemann, T., Couffignal, F., Feng, D., Glodny, J., Kusebauch, C., Mayanna, S., Rocholl, A., Speir, L., Sun, Y., Wilke, F. (2022 online): Inter‐laboratory Characterisation of Apatite Reference Materials for Oxygen Isotope Analysis and Associated Methodological Considerations. - Geostandards and Geoanalytical Research.
https://doi.org/10.1111/ggr.12416

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Wudarska, Alicja1, Autor              
Wiedenbeck, Michael2, Autor
Słaby, Ewa2, Autor
Lempart‐Drozd, Małgorzata2, Autor
Harris, Chris2, Autor
Joachimski, Michael M.2, Autor
Lécuyer, Christophe2, Autor
MacLeod, Kenneth G.2, Autor
Pack, Andreas2, Autor
Vennemann, Torsten2, Autor
Couffignal, Frédéric2, Autor
Feng, Dingsu2, Autor
Glodny, J.1, Autor              
Kusebauch, C.1, Autor              
Mayanna, S.3, Autor              
Rocholl, A.1, Autor              
Speir, Laura2, Autor
Sun, Yadong2, Autor
Wilke, F.1, Autor              
Affiliations:
13.1 Inorganic and Isotope Geochemistry, 3.0 Geochemistry, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum, ou_146040              
2External Organizations, ou_persistent22              
33.5 Interface Geochemistry, 3.0 Geochemistry, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum, ou_754888              

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Schlagwörter: Deal Wiley
 Zusammenfassung: Here we report on the oxygen isotope compositions of four proposed apatite reference materials (chlorapatite MGMH#133648 and fluorapatite specimens MGMH#128441A, MZ-TH, and ES-MM). The samples were initially screened for 18O/16O homogeneity using secondary ion mass spectrometry (SIMS) followed by δ18O determinations in six gas source isotope ratio mass spectrometry laboratories (GS-IRMS) employing a variety of analytical protocols for determining either phosphate-bonded or “bulk” oxygen compositions. We also report preliminary δ17O and Δ’17O data, major and trace element compositions collected using EPMA as well as CO32- and OH- contents in the apatite structure assessed using thermogravimetric analysis and infrared spectroscopy. The repeatability of our SIMS measurements was better than ± 0.25 ‰ (1s) for all four materials that cover a wide range of 103δ18O values between +5.8 and +21.7. The GS-IRMS results show, however, a significant offset of 103δ18O values between the “phosphate” and “bulk” analyses that could not be correlated with chemical characteristics of the studied samples. Therefore, we provide two sets of working values specific to these two classes of analytical methodologies as well as current working values for SIMS data calibration.

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 Datum: 2022-01-18
 Publikationsstatus: Online veröffentlicht
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 Ort, Verlag, Ausgabe: -
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 Art der Begutachtung: -
 Identifikatoren: DOI: 10.1111/ggr.12416
GFZPOF: p4 MESI
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Titel: Geostandards and Geoanalytical Research
Genre der Quelle: Zeitschrift, SCI, Scopus
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Ort, Verlag, Ausgabe: -
Seiten: - Band / Heft: - Artikelnummer: - Start- / Endseite: - Identifikator: CoNE: https://gfzpublic.gfz-potsdam.de/cone/journals/resource/journals187
Publisher: Wiley