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The preparation, homogeneity and stability of a fly ash reference material and the subsequent certification of the mass fraction of five polychlorodibenzo-p-dioxins and seven polychlorodibenzofurans are described. The material, BCR CRM 490, is intended for use in the method validation and quality control for congener-specific determination of dioxins.

The certification was based on an interlaboratory study. A summary of the analytical techniques used and the quality control guidelines followed is presented, together with the evaluation of the results. .

Additional information

Authors: VAN CLEUVENBERGEN R, VITO, Mol (BE);KRAMER G N, IRMM, Geel (BE);MAIER E A, EC Standards, Measurements and Testing Programme, Brussels (BE)
Bibliographic Reference: Article: Chemosphere, 37 (1998), 2425-2438
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