Nano-Powdered Calcium Carbonate Reference Materials: Significant Progress for Microanalysis?
Garbe-Schönberg, Dieter
Veter, Marina
Stoll, Brigitte
Lugli, Federico
Jentzen, Anna
Wassenburg, Jasper A.
Jacob, Dorrit E.
Haug, Gerald H.
DOI: https://doi.org/10.1111/ggr.12292
Persistent URL: http://resolver.sub.uni-goettingen.de/purl?gldocs-11858/9076
Persistent URL: http://resolver.sub.uni-goettingen.de/purl?gldocs-11858/9076
Jochum, Klaus Peter; Garbe-Schönberg, Dieter; Veter, Marina; Stoll, Brigitte; Weis, Ulrike; Weber, Michael; Lugli, Federico; Jentzen, Anna; Schiebel, Ralf; Wassenburg, Jasper A.; Jacob, Dorrit E.; Haug, Gerald H., 2019: Nano-Powdered Calcium Carbonate Reference Materials: Significant Progress for Microanalysis?. In: Geostandards and Geoanalytical Research, Band 43, 4: 595 - 609, DOI: 10.1111/ggr.12292.
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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.
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Subjects:
laser ablation-inductively coupled plasma-mass spectrometrymicroanalysis
reference materials
carbonate
homogeneity
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