TY - JOUR

T1 - Characterisation of Conventional 87Sr/86Sr Isotope Ratios in Cement, Limestone and Slate Reference Materials Based on an Interlaboratory Comparison Study

AU - Kazlagić, Anera

AU - Rosner, Martin

AU - Cipriani, Anna

AU - Frick, Daniel A.

AU - Glodny, Johannes

AU - Hoffmann, Elis J.

AU - Hora, John M.

AU - Irrgeher, Johanna

AU - Lugli, Federico

AU - Magna, Tomas

AU - Meisel, Thomas

AU - Meixner, Anette

AU - Possolo, Antonio

AU - Pramann, Axel

AU - Pribil, Michael J.

AU - Prohaska, Thomas

AU - Retzmann, Anika

AU - Rienitz, Olaf

AU - Rutherford, Daniel

AU - Paula-Santos, Gustavo M.

AU - Tatzel, Michael

AU - Widhalm, Sara

AU - Willbold, Matthias

AU - Zuliani, Tea

AU - Vogl, Jochen

N1 - Publisher Copyright: © 2023 The Authors. Geostandards and Geoanalytical Research published by John Wiley & Sons Ltd on behalf of International Association of Geoanalysts.

PY - 2023/7/3

Y1 - 2023/7/3

N2 - 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.

AB - 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.

KW - cement

KW - conventional method

KW - geological material

KW - interlaboratory comparison

KW - isotope ratios

KW - MC-ICP-MS

KW - MC-TIMS

KW - measurement uncertainty

KW - Sr isotope analysis

UR - http://www.scopus.com/inward/record.url?scp=85165579256&partnerID=8YFLogxK

U2 - 10.1111/ggr.12517

DO - 10.1111/ggr.12517

M3 - Article

AN - SCOPUS:85165579256

VL - 47.2023

SP - 821

EP - 840

JO - Geostandards and Geoanalytical Research

JF - Geostandards and Geoanalytical Research

SN - 1639-4488

IS - 4

ER -