Nano-powdered calcium carbonate reference materials: significant progress for microanalysis?

Klaus Peter Jochum*, Dieter Garbe-Schönberg, Marina Veter, Brigitte Stoll, Ulrike Weis, Michael Weber, Federico Lugli, Anna Jentzen, Ralf Schiebel, Jasper A. Wassenburg, Dorrit E. Jacob, Gerald H. Haug

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

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    Abstract

    Homogeneity, mass fractions of about forty trace elements and Sr isotope composition of Ca carbonate reference materials (RMs) between original and nano-powdered pellets are compared. Our results using nanosecond and femtosecond LA-(MC)-ICP-MS show that the nano-pellets of the RMs MACS-3NP, JCp-1NP and JCt-1NP are about a factor of 2–3 more homogeneous than the original samples MACS-3, JCp-1 and JCt-1, and are therefore much more suitable for microanalytical purposes. With the exception of Si, the mass fractions of the synthetic RM MACS-3 agree with its fine-grained analogue MACS-3NP. Very small, but significant, differences between original and nano-pellets are observed in the RMs JCp-1 and JCt-1 for some trace elements with very low contents, indicating the need for re-certification. Strontium mass fractions in the analysed RMs are high (1500–7000 mg kg−1), and their isotope compositions determined by LA-MC-ICP-MS in the original and the nano-pellets agree within uncertainty limits.

    Original languageEnglish
    Pages (from-to)595-609
    Number of pages15
    JournalGeostandards and Geoanalytical Research
    Volume43
    Issue number4
    Early online date25 Jul 2019
    DOIs
    Publication statusPublished - Dec 2019

    Bibliographical note

    Copyright the Author(s) 2019. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

    Keywords

    • laser ablation-inductively coupled plasma-mass spectrometry
    • microanalysis
    • reference materials
    • carbonate
    • homogeneity

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