Abstract.
An inter-laboratory study was performed by some National Metrology Institutes in order to take a snap shot of the comparability and the capability of performing purity assessments of high purity materials as needed for providing national standards for elemental determination. The measurand was defined as the value of the sum of the mass fractions of Ag, Al, Cu, Fe, Pb and Zn in the bulk of a high purity nickel material and the interim results for the six individual impurities. Whereas for the analytes Ag, Al, Cu and Fe there was no agreement within the target uncertainty of 30%, agreement could be achieved for Pb and Zn. The discrepancies observed for the individual analytes resulted in a variation of a factor of 8 of the reported values for the impurity of nickel with respect to the six defined metallic analytes. The reference measurements using IDMS and for Al using GD-MS confirmed the lower reported values.
Similar content being viewed by others
References
H Kipphardt R Matschat O Rienitz D Schiel W Gernand D Oeter (2006) ArticleTitleTraceability system for elemental analysis Accred Qual Assur 10 633 Occurrence Handle10.1007/s00769-005-0084-6 Occurrence Handle1:CAS:528:DC%2BD28XhvVSktb8%3D
Surface treatment of non-ferrous metals for the purpose of gas analysis, EUR 6602EN, CEC (1979)
R Matschat J Hinrichs H Kipphardt (2006) ArticleTitleApplication of glow discharge mass spectrometry to the multielement ultra-trace determination in ultrahigh purity copper and iron – a way of calibration to achieve quantification and traceability Anal Bioanal Chem 386 125 Occurrence Handle10.1007/s00216-006-0645-5 Occurrence Handle1:CAS:528:DC%2BD28Xotl2msrs%3D
Author information
Authors and Affiliations
Corresponding author
Additional information
Correspondence: Heinrich Kipphardt, BAM (Federal Institute for Materials Research and Testing), Richard-Willstaetter-Str. 11, 12489 Berlin, Germany
Rights and permissions
About this article
Cite this article
Kipphardt, H., Matschat, R. Purity assessment for providing primary standards for elemental determination – a snap shot of international comparability. Microchim Acta 162, 269–275 (2008). https://doi.org/10.1007/s00604-007-0937-2
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00604-007-0937-2