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Abstract

This report documents the preparation, homogeneity, stability and certification of three liquid human serum materials, i.e. BCR-637, BCR-638 and BCR-639 with certified concentrations of aluminium, selenium and zinc. The homogeneity studies demonstrated that the materials are homogeneous with respect to the content of aluminium, zinc and selenium. The materials were subjected to a certification campaign for which the analytical work is described. Uncertainty contributions for stability, homogeneity and characterisation were included in the combined and expanded uncertainties assigned to the certified values.

Additional information

Authors: BYRIALSEN K, National Institute of Occupational Health, Reference Laboratory, Copenhagen (DK);KRISTIANSEN J, National Institute of Occupational Health, Reference Laboratory, Copenhagen (DK);CHRISTENSEN J M, National Institute of Occupational Health, Reference Laboratory, Copenhagen (DK);DIRSCHERL C, European Commission, DG Research, Standards, Measurement and Testing, Brussels (BE);GAWLIK B, European Commission, Joint Research Centre, Institute for Reference Materials and Measurements, Geel (BE);KLEIN C L, European Commission, Joint Research Centre, Institute for Reference Materials and Measurements, Geel (BE);LAMBERTY A, European Commission, Joint Research Centre, Institute for Reference Materials and Measurements, Geel (BE)
Bibliographic Reference: EUR 21076 EN (2004), 44 pp. Free of charge
Availability: Available from European Commission, JRC Knowledge Management Unit, Ispra (IT) Tel: +39 033278 9893 Fax: +39 033278 5409 E-mail: jrc-publications-office@ec.europa.eu or Bruxelles (BE) Tel: +32 2 295 76 24 Fax: +32 2 299 63 22
ISBN: ISBN: 92-894-7221-9
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