Critical evaluation of internal and external calibration methods for accurate strontium isotope ratio determination
This work empirically confirms theoretical considerations that the traditionally used calibration method in n(<sup>87</sup>Sr)/n(<sup>86</sup>Sr) isotope ratio analysis i.e.; internal calibration can produce significantly biased data. Moreover, it shows for the first time that the choice of calibration method has an impact on the outcome of a provenance study. Therefore, future investigations should use a more reliable calibration method in case high accuracy n(<sup>87</sup>Sr)/n(<sup>86</sup>Sr) isotope ratios are needed. External calibration via standard-sample-bracketing represents an attractive option.
Authors
- Stephan Hann (ORCID: https://orcid.org/0000-0001-5045-7293)
- Bendegúz Tóbiás (ORCID: https://orcid.org/0000-0001-6946-4397)
- Pavlína Ingrová (ORCID: https://orcid.org/0000-0002-7944-1612)
- Zuzana Hofmanová (ORCID: https://orcid.org/0000-0003-1336-4455)
- Anastassiya Tchaikovsky (ORCID: https://orcid.org/0000-0002-7811-3019)
- Margit Berner (ORCID: https://orcid.org/0000-0001-8922-7268)
- Theresa Scharl (ORCID: https://orcid.org/0000-0001-8850-3312)
- Doris Pany‐Kucera (ORCID: https://orcid.org/0000-0003-4140-3220)
- Walter Pohl (ORCID: https://orcid.org/0000-0002-6885-2248)
Institutions
- Natural History Museum Vienna (AT)
- Austrian Academy of Sciences (AT)
- Masaryk University (CZ)
- Institute for Medieval Research (AT)
- Max Planck Institute for Evolutionary Anthropology (DE)
- BOKU University (AT)
Publication Details
- Journal
- Analytica Chimica Acta
- Published
- 2025-10-17
- DOI
- https://doi.org/10.1016/j.aca.2025.344783
- Primary Topic
- Isotope Analysis in Ecology
- Type
- article
- Field-Weighted Citation Impact
- 0.00