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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 (PCDD) and seven polychlorodibenzofurans (PCDF) 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, European Commission, Standards Measurements and Testing Programme, Brussels (BE)
Bibliographic Reference: Paper presented: Symposium on Chlorinated Dioxins and Related Compounds, Amsterdam (NL), August 12-16, 1996
Availability: Available from (1) as Paper EN 40947 ORA
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