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InterCarb: A community effort to improve inter-laboratory standardization of the carbonate clumped isotope thermometer using carbonate standards
- Source :
- Geochemistry, Geophysics, Geosystems, Geochemistry, Geophysics, Geosystems, 2021, 22 (5), pp.e2020GC009588. ⟨10.1029/2020GC009588⟩, Geochemistry, geophysics, geosystems : G(3), vol 22, iss 5, Geochemistry, Geophysics, Geosystems, vol. 22, no. 5, e2020GC009588, Geochemistry Geophysics Geosystems, Geochemistry, Geophysics, Geosystems, AGU and the Geochemical Society, 2021, 22 (5), ⟨10.1029/2020GC009588⟩, Geochemistry, Geophysics, Geosystems, 22(5). American Geophysical Union, Geochemistry, Geophysics, Geosystems, 22 (5), Geochemistry, geophysics, geosystems, 22 (5), Art.Nr.e2020GC009588, Geochemistry, Geophysics, Geosystems : G(3)
- Publication Year :
- 2021
- Publisher :
- HAL CCSD, 2021.
-
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.<br />Key Points The exclusive use of carbonate reference materials is a robust method for the standardization of clumped isotope measurementsMeasurements using different acid temperatures, designs of preparation lines, and mass spectrometers are statistically indistinguishableWe propose new consensus values for a set of seven carbonate reference materials and updated guidelines to report clumped isotope measurements
- Subjects :
- Geochemistry & Geophysics
Stable Isotope Geochemistry
010504 meteorology & atmospheric sciences
Standardization
Geography & travel
Mineralogy
carbonate, clumped isotopes, interlaboratory calibration, mass spectrometry, reference materials
[SDU.STU]Sciences of the Universe [physics]/Earth Sciences
interlaboratory calibration
Biogeosciences
010502 geochemistry & geophysics
01 natural sciences
Oceanography: Biological and Chemical
chemistry.chemical_compound
carbonate
Clumped Isotope Geochemistry: From Theory to Applications
Geochemistry and Petrology
[SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry
Data Analysis: Algorithms and Implementation
Instruments and Techniques
Nuclear Experiment
ddc:910
0105 earth and related environmental sciences
mass spectrometry
Isotopic Composition and Chemistry
Isotope
Stable Isotopes
010401 analytical chemistry
clumped isotopes
reference materials
0104 chemical sciences
Geochemistry
Geophysics
chemistry
13. Climate action
Thermometer
Physical Sciences
Earth Sciences
Carbonate
Computational Geophysics
Geology
Research Article
Subjects
Details
- Language :
- English
- ISSN :
- 15252027
- Database :
- OpenAIRE
- Journal :
- Geochemistry, Geophysics, Geosystems, Geochemistry, Geophysics, Geosystems, 2021, 22 (5), pp.e2020GC009588. ⟨10.1029/2020GC009588⟩, Geochemistry, geophysics, geosystems : G(3), vol 22, iss 5, Geochemistry, Geophysics, Geosystems, vol. 22, no. 5, e2020GC009588, Geochemistry Geophysics Geosystems, Geochemistry, Geophysics, Geosystems, AGU and the Geochemical Society, 2021, 22 (5), ⟨10.1029/2020GC009588⟩, Geochemistry, Geophysics, Geosystems, 22(5). American Geophysical Union, Geochemistry, Geophysics, Geosystems, 22 (5), Geochemistry, geophysics, geosystems, 22 (5), Art.Nr.e2020GC009588, Geochemistry, Geophysics, Geosystems : G(3)
- Accession number :
- edsair.doi.dedup.....1ddc9fbe8f4377f171029d88af518dee