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Silicon isotope analyses of soil and plant reference materials : an inter‐comparison of seven laboratories

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Date
27/04/2021
Author
Delvigne, Camille
Guihou, Abel
Schuessler, Jan
Savage, Paul
Poitrasson, Franck
Fischer, Sebastian
Hatton, Jade
Hendry, Katharine
Bayon, Germain
Ponzevera, Emmanuel
Georg, Bastian
Akerman, Alisson
Pokrovsky, Oleg
Meunier, Jean-Dominique
Deschamps, Pierre
Basile-Doelsch, Isabelle
Funder
NERC
Carnegie Trust
Grant ID
NSF
70517
Keywords
Silicon isotopes
Reference materials
Soil
Plant
Inter-comparison of measurements
GE Environmental Sciences
DAS
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Abstract
The use of silicon (Si) isotopes has led to major advances in our understanding of Si cycling in modern and past environments. This inter‐laboratory comparison exercise provides the community with the first set of soil and plant reference materials with an analytically challenging matrix containing organic material that is known to induce isotopic bias, for use as secondary reference materials in Si isotope measurement. Seven laboratories analysed four soil reference materials (GBW‐07401, GBW‐07404, GBW‐07407, TILL‐1) and one plant reference material (ERM‐CD281). Participating laboratories employed a range of chemical preparation methods and analytical setups but all analyses were performed by MC‐ICP‐MS. Irrespective of the chemical preparation method or analytical conditions, the results show excellent agreement among laboratories within 2s for at least three replicates. Data were combined together to calculate δ29Si and δ30Si mean values (relative to NBS 28) and their expanded uncertainties (U, coverage factor k = 2). The δ30Si values are as follow: GBW‐07401: ‐0.27 ± 0.06 ‰, GBW‐07404: ‐0.76 ± 0.12 ‰, GBW‐07407: ‐1.82 ± 0.17 ‰, TILL‐1: ‐0.16 ± 0.06 ‰ and ERM‐CD281: ‐0.28 ± 0.11 ‰. Also, a compilation of published data provides an up‐to‐date mean δ30Si for BHVO‐2 of ‐0.28 ± 0.08 ‰.
Citation
Delvigne , C , Guihou , A , Schuessler , J , Savage , P , Poitrasson , F , Fischer , S , Hatton , J , Hendry , K , Bayon , G , Ponzevera , E , Georg , B , Akerman , A , Pokrovsky , O , Meunier , J-D , Deschamps , P & Basile-Doelsch , I 2021 , ' Silicon isotope analyses of soil and plant reference materials : an inter‐comparison of seven laboratories ' , Geostandards and Geoanalytical Research , vol. Early View . https://doi.org/10.1111/ggr.12378
Publication
Geostandards and Geoanalytical Research
Status
Peer reviewed
DOI
https://doi.org/10.1111/ggr.12378
ISSN
1751-908X
Type
Journal article
Rights
© 2021 The Authors. Geostandards and Geoanalytical Research © 2021 International Association of Geoanalysts. This work has been made available online in accordance with publisher policies or with permission. Permission for further reuse of this content should be sought from the publisher or the rights holder. This is the author created accepted manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at https://doi.org/10.1111/ggr.12378
Description
SF and the Si isotope measurements at STAiG were supported by NERC grant NE/R002134/1 to PS; PS would also like to cite the support of a Carnegie Trust Research Incentive Grant, which helped the setup of various isotope techniques in the St Andrews Isotope Geochemistry (STAiG) laboratories. C.D. Coath is thanked for laboratory support and the European Research Council is acknowledged for funding (ICY-LAB, grant agreement 678371).
Collections
  • University of St Andrews Research
URI
http://hdl.handle.net/10023/25251

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