New quartz and zircon Si isotopic reference materials for precise and accurate SIMS isotopic microanalysis
Date
25/04/2022Metadata
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Abstract
Here we report the Si isotope compositions of four potential reference materials, including one fused quartz glass (Glass-Qtz), one natural quartz (Qinghu-Qtz), and two natural zircons (Qinghu-Zir and Penglai-Zir), suitable for in-situ Si isotopic microanalysis. Repeated SIMS (Secondary Ion Mass Spectrometry) analyses demonstrate that these materials are more homogeneous in Si isotopes (with the spot-to-spot uncertainty of 0.090-0.102‰), compared with the widely used NIST RM 8546 (previously NBS-28) quartz standard (with the spot-to-spot uncertainty poorer than 0.16‰). Based on the solution-MC-ICP-MS determination, the recommended δ30Si values are −0.10 ± 0.04 ‰ (2SD), −0.03 ± 0.05 ‰ (2SD), −0.45 ± 0.06 ‰ (2SD), and −0.34 ± 0.06 ‰ (2SD), for Glass-Qtz, Qinghu-Qtz, Qinghu-Zir, and Penglai-Zir, respectively. Our results reveal no detectable matrix effect on SIMS Si isotopic microanalysis between the fused quartz glass (Glass-Qtz) and natural quartz (Qinghu-Qtz) standards. Therefore, we propose that this synthetic quartz glass may be used as an alternative, more homogenous standard for SIMS Si isotopic microanalysis of natural quartz samples.
Citation
Liu , Y , Li , X-H , Savage , P S , Tang , G-Q , Li , Q-L , Yu , H-M & Huang , F 2022 , ' New quartz and zircon Si isotopic reference materials for precise and accurate SIMS isotopic microanalysis ' , Atomic Spectroscopy , vol. 43 , no. 2 , pp. 99-106 . https://doi.org/10.46770/AS.2021.1110
Publication
Atomic Spectroscopy
Status
Peer reviewed
ISSN
0195-5373Type
Journal article
Rights
Copyright © 2022 Atomic Spectroscopy Press Ltd. All rights reserved. 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 final published version of the work, which was originally published at http://www.at-spectrosc.com/as/article/abstract/20211110.
Description
This work was financially supported by the National Key R&D Program of China (2018YFA0702600) and National Science Foundation of China (41890831).Collections
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