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Certification of the contents of five polychlorodibenzo-p-dioxins and six polychlorodibenzo furans in milk powder


Certification of the contents of five polychlorodibenzo-p-dioxins and six polychlorodibenzo furans in milk powder



Fresenius' Journal of Analytical Chemistry 359(3): 222-229



ISSN/ISBN: 0937-0633

DOI: 10.1007/s002160050564

Preparation, homogeneity and stability studies of a natural milk powder material and subsequent certification of the mass fraction of five polychlorodibenzo-p-dioxins (D48, D54, D66, D67, D70) and six polychlorodibenzo furans (F83, F94, F114, F118, F121, F130) are described. The material, CRM 607, is intended for use in the method validation and quality control of the complete analytical procedure for congener-specific determination of dioxins in milk powder and similar dairy products and was certified in an interlaboratory study for: 2,3,7,8-TCDD, 0.25 ng/kg; 1,2,3,7,8-PeCDD, 0.79 ng/kg; 1,2,3,4,7,8HxCDD 0.42 ng/kg; 1,2,3,6,7,8-HxCDD, 0.98 ng/kg; 1,2,3,7,8,9-HxCDD, 0.34 ng/kg; 2,3,7,8-TCDF, 0.05 ng/kg; 1,2,3, 7,8-PeCDF, 0.054 ng/kg; 2,3,4,7,8PeCDF, 1.81 ng/kg; 1,2,3,4,7, 8-HxCDF, 0.94 ng/kg; 1,2,3,6,7,8-HxCDF, 1.01 ng/kg and 2,3,4,6,7,8-HxCDF, 1.07 ng/kg. An indicative (non-certified) value was assigned to the mass fraction of the hepta- and octachlorinated congeners D73, D75, F131, F134, F135 and the HxCDF F124.

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Certification of the contents of five polychlorodibenzo-p-dioxins (D48, D54, D66, D67, D70), and six polychlorodibenzo-furans (F83, F94, F114, F121, F124, F130) in a fly ash extract (CRM 429). Worshop on the State of the Art of the Determination of Polychlorinated Dibenzo Dioscins and Furans 348(1-2): 23-30, 1994

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