Characterisation of Conventional 87Sr/86Sr Isotope Ratios in Cement, Limestone and Slate Reference Materials Based on an Interlaboratory Comparison Study

Anera Kazlagić, Martin Rosner, Anna Cipriani, Daniel A. Frick, Johannes Glodny, Elis J. Hoffmann, John M. Hora, Johanna Irrgeher, Federico Lugli, Tomas Magna, Thomas Meisel, Anette Meixner, Antonio Possolo, Axel Pramann, Michael J. Pribil, Thomas Prohaska, Anika Retzmann, Olaf Rienitz, Daniel Rutherford, Gustavo M. Paula-SantosMichael Tatzel, Sara Widhalm, Matthias Willbold, Tea Zuliani, Jochen Vogl

Publikation: Beitrag in FachzeitschriftArtikelForschungBegutachtung

Abstract

An interlaboratory comparison (ILC) was organised to characterise 87Sr/86Sr isotope ratios in geological and industrial reference materials by applying the so-called conventional method for determining 87Sr/86Sr isotope ratios. Four cements (VDZ 100a, VDZ 200a, VDZ 300a, IAG OPC-1), one limestone (IAG CGL ML-3) and one slate (IAG OU-6) reference materials were selected, covering a wide range of naturally occurring Sr isotopic signatures. Thirteen laboratories received aliquots of these six reference materials together with a detailed technical protocol. The consensus values for the six reference materials and their associated measurement uncertainties were obtained by applying a Gaussian, linear mixed effects model fitted to all the measurement results. By combining the consensus values and their uncertainties with an uncertainty contribution for potential heterogeneity, reference values ranging from 0.708134 mol mol-1 to 0.729778 mol mol-1 were obtained with relative expanded uncertainties of ≤ 0.007 %. This study represents an ILC on conventional 87Sr/86Sr isotope ratios, within which metrological principles were considered and the compatibility of measurement results obtained by MC-ICP-MS and by MC-TIMS is demonstrated. The materials characterised in this study can be used as reference materials for validation and quality control purposes and to estimate measurement uncertainties in conventional 87Sr/86Sr isotope ratio measurement.
OriginalspracheEnglisch
Seiten (von - bis)821-840
Seitenumfang20
FachzeitschriftGeostandards and Geoanalytical Research
Jahrgang47.2023
Ausgabenummer4
DOIs
PublikationsstatusVeröffentlicht - 3 Juli 2023

Bibliographische Notiz

Funding Information:
This project was supported by the International Association of Geoanalysts (IAG). The authors would also like to thank the support staff of the participating laboratories, too numerous to name individually, for their assistance. The authors declare no competing interests. This work received funds under the project number MIT1‐2019–8 from the Federal Institute for Materials Research and Testing (BAM), Germany. Tomas Magna acknowledges support from the Czech Science Foundation project 19‐29124X. Montanuniversität Leoben (MUL) acknowledges funding received from Land Steiermark Zukunftsfonds (project number: PN1115). Disclaimer: Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Open Access funding enabled and organized by Projekt DEAL.

Funding Information:
This project was supported by the International Association of Geoanalysts (IAG). The authors would also like to thank the support staff of the participating laboratories, too numerous to name individually, for their assistance. The authors declare no competing interests. This work received funds under the project number MIT1-2019–8 from the Federal Institute for Materials Research and Testing (BAM), Germany. Tomas Magna acknowledges support from the Czech Science Foundation project 19-29124X. Montanuniversität Leoben (MUL) acknowledges funding received from Land Steiermark Zukunftsfonds (project number: PN1115). Disclaimer: Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Open Access funding enabled and organized by Projekt DEAL.

Publisher Copyright:
© 2023 The Authors. Geostandards and Geoanalytical Research published by John Wiley & Sons Ltd on behalf of International Association of Geoanalysts.

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