BS EN 15550:2017 specifies a method for the determination of the elements cadmium and lead in animal feeding stuffs by graphite furnace atomic absorption spectrometry (GF-AAS) after pressure digestion.

The method was successfully tested in the range of 0,015 mg/kg to 5,65 mg/kg for Cd and 0,18 mg/kg to 40,3 mg/kg for lead in 11 animal feeds: 2 complete feeds (pig feed, sheep feed), 2 complementary feeds (2 mineral feeds), 1 mineral premixture, 4 feed materials (MgO, 2 phosphates, CaCO3) and 2 feed additives (CuSO4, bentonite).

For the determination of extractable lead in minerals and feeds, containing phyllosilicates (e.g. kaolinite clay) wet digestion with diluted nitric acid should be used.

The method limit of quantification for each element is dependent on the sample matrix as well as the instrument. For cadmium a limit of quantification of 0,05 mg/kg should normally be obtained while for lead, a limit of quantification of 0,5 mg/kg should be obtained.


Cross References:
ISO 3696:1987
EN ISO 6498 (ISO 6498:2012) AS
ISO 6498:2012
NF EN ISO 3696:1995 (F)
Regulation (EC) No 178/2002
Regulation (EC) No 1831/2003
EN ISO 6497 (ISO 6497:2002) AS
ISO 11843-1:1997
ISO 6497:2002 Ed 1 (R08)
EN 13805:2014
ISO 5725-1:1994


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