InterCarb: A Community Effort to Improve Interlaboratory Standardization of the Carbonate Clumped Isotope Thermometer Using Carbonate Standards

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Ressource 1Download: Intercarb-Clumped isotope Thermometry paper G-Cubed 2021.pdf (874.81 [Ko])
State: Public
Version: Final published version
License: CC BY-NC 4.0
Serval ID
serval:BIB_3A9D133D95D9
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
InterCarb: A Community Effort to Improve Interlaboratory Standardization of the Carbonate Clumped Isotope Thermometer Using Carbonate Standards
Journal
Geochemistry, Geophysics, Geosystems
Author(s)
Bernasconi S. M., Daëron M., Bergmann K. D., Bonifacie M., Meckler A. N., Affek H. P., Anderson N., Bajnai D., Barkan E., Beverly E., Blamart D., Burgener L., Calmels D., Chaduteau C., Clog M., Davidheiser-Kroll B., Davies A., Dux F., Eiler J., Elliott B., Fetrow A. C., Fiebig J., Goldberg S., Hermoso M., Huntington K. W., Hyland E., Ingalls M., Jaggi M., John C. M., Jost A. B., Katz S., Kelson J., Kluge T., Kocken I. J., Laskar A., Leutert T. J., Liang D., Lucarelli J., Mackey T. J., Mangenot X., Meinicke N., Modestou S. E., Müller I. A., Murray S., Neary A., Packard N., Passey B. H., Pelletier E., Petersen S., Piasecki A., Schauer A., Snell K. E., Swart P. K., Tripati A., Upadhyay D., Vennemann T., Winkelstern I., Yarian D., Yoshida N., Zhang N., Ziegler M.
ISSN
1525-2027
1525-2027
Publication state
Published
Issued date
05/2021
Peer-reviewed
Oui
Volume
22
Number
5
Language
english
Abstract
Increased use and improved methodology of carbonate clumped isotope thermometry has greatly enhanced our ability to interrogate a suite of Earth-system processes. However, interlaboratory discrepancies in quantifying carbonate clumped isotope (Δ47) measurements persist, and their specific sources remain unclear. To address interlaboratory differences, we first provide consensus values from the clumped isotope community for four carbonate standards relative to heated and equilibrated gases with 1,819 individual analyses from 10 laboratories. Then we analyzed the four carbonate standards along with three additional standards, spanning a broad range of δ47 and Δ47 values, for a total of 5,329 analyses on 25 individual mass spectrometers from 22 different laboratories. Treating three of the materials as known standards and the other four as unknowns, we find that the use of carbonate reference materials is a robust method for standardization that yields interlaboratory discrepancies entirely consistent with intralaboratory analytical uncertainties. Carbonate reference materials, along with measurement and data processing practices described herein, provide the carbonate clumped isotope community with a robust approach to achieve interlaboratory agreement as we continue to use and improve this powerful geochemical tool. We propose that carbonate clumped isotope data normalized to the carbonate reference materials described in this publication should be reported as Δ47 (I-CDES) values for Intercarb-Carbon Dioxide Equilibrium Scale.
Keywords
carbonate, clumped isotopes, interlaboratory calibration, mass spectrometry, reference materials
Pubmed
Web of science
Open Access
Yes
Funding(s)
Swiss National Science Foundation / 200021_143485
Swiss National Science Foundation / 200020_160046
Create date
18/11/2021 15:44
Last modification date
10/01/2023 6:50
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