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Milk powders spiked with different quantities of polychlorinated dibenzo-p-dioxins (PCDDs) and dibenzofurans (PCDFs) have been prepared by both freeze-drying and spray-drying. The spray-dried batches have been compared with the freeze-dried ones. The homogeneity of both batches has been verified by determining the PCB, fat and Kjeldahl nitrogen content and the stability was checked using similar tests. The results obtained show that there is no significant difference between the materials and the results can therefore be used as indicative values for the spray-dried laboratory reference material.

Additional information

Authors: MAIER E, European Commission, Bruxelles (BE);VAN CLEUVENBERGEN R, Vlaamse Instelling voor Technologisch Onderzoek (VITO), Mol (BE);KRAMER G N, JRC Geel (BE);PAUWELS J, JRC Geel (BE);TUINSTRA L G M T, Rijks-Kwaliteitsinstituut voor Land- en Tuinbouwprodukten (RIKILT-DLO), Wageningen (NL)
Bibliographic Reference: Paper presented: BERM-6, Beltsville, Maryland (US), April 17-21, 1994
Availability: Available from (1) as Paper EN 38225 ORA
Record Number: 199410490 / Last updated on: 1994-11-28
Original language: en
Available languages: en
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