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Purity determination as needed for the realisation of primary standards for elemental determination: status of international comparability

  • Within the National Metrology Institutes (NMIs) and designated laboratories, an interlaboratory comparison, CCQM-P107, was conducted to verify the degree of international comparability concerning the results of purity analysis. The mass fractions of Ag, Bi, Cd, Cr, Ni, Tl at the lower mg/kg-level in a high purity zinc material were determined, but the real measurand in metrological sense was the sum of the six mass fractions. Homogeneity was investigated by glow discharge mass spectrometry, reference values were obtained using isotope dilution mass spectrometry. Six NMIs participated, contributing eight independent data sets. The agreement amongst the results of the participants, their median and the agreement with the reference values were usually excellent and in almost all cases below the target uncertainty of 30% relative. In this manner, the accuracy of results and the comparability between the participants was demonstrated to be established.

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Metadaten
Autoren/innen:Heinrich Kipphardt, Ralf Matschat, Jochen VoglORCiD, Tamara Gusarova, Michael Czerwensky, Hans-Joachim Heinrich, A. Hioki, L.A. Konopelko, B. Methven, T. Miura, O. Petersen, Gundel Riebe, R. Sturgeon, G.C. Turk, L. L. Yu
Dokumenttyp:Zeitschriftenartikel
Veröffentlichungsform:Verlagsliteratur
Sprache:Englisch
Titel des übergeordneten Werkes (Englisch):Accreditation and quality assurance
Jahr der Erstveröffentlichung:2010
Verlag:Springer
Verlagsort:Berlin
Jahrgang/Band:15
Ausgabe/Heft:1
Erste Seite:29
Letzte Seite:37
Freie Schlagwörter:CCQM-P107; High purity metals; Interlaboratory comparison; Purity analysis; Zinc
DOI:https://doi.org/10.1007/s00769-009-0557-0
ISSN:0949-1775
ISSN:1432-0517
Verfügbarkeit des Dokuments:Physisches Exemplar in der Bibliothek der BAM vorhanden ("Hardcopy Access")
Bibliotheksstandort:Sonderstandort: Publica-Schrank
Datum der Freischaltung:19.02.2016
Referierte Publikation:Ja
Datum der Eintragung als referierte Publikation:11.01.2010