Authors: Kipphardt, Heinrich, Matschat, Ralf, Vogl, Jochen, Gusarova, Tamara, Czerwensky, Michael, Hans-joachim, Hioki, Akiharu, Konopelko, Leonid A., Methven, Brad, Miura, Tsutomu, Petersen, Ole, Riebe, Gundel, Sturgeon, Ralph, Turk, Gregory C., Yu, Lee L.
Venue: Accreditation and Quality Assurance
Type: Publication
Abstract: 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 ...
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