Certified reference materials—Hay Powder (CRM 129) and Rye Grass (CRM 281)—for the quality control of analysis of animal feed |
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Authors: | Eddie A Maier Bernard Griepink Philippe Quevauviller Luciano De Angelis Herbert Muntau |
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Institution: | (1) Community Bureau of Reference (BCR), Commission of the European Communities, Rue de la Loi 200, B-1049 Brussels, Belgium;(2) Central Bureau of Nuclear Measurements, Commission of the European Communities, B-2440 Geel, Belgium;(3) Joint Research Center, Commission of the European Communities, I-21020 Ispra, Italy |
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Abstract: | Analyses of nutritive elements are routinely performed in grass or hay for animal feed in order to improve the state of health and growth of domestic animals. To control the quality of such determinations, the Community Bureau of Reference (BCR) so far has produced two certified reference materials: Hay Powder (CRM 129) and Rye Grass (CRM 281). After a careful preparation procedure of the materials, a homogeneity study and a long-term stability study, the contents of the elements Ca, K, Mg, P, S, Zn, I, N and Kjeldahl-N were certified in CRM 129, whereas CRM 281 was certified for As, B, Cd, Cu, Hg, Mn, Mo, Ni, Pb, Sb, Se and Zn. This paper presents the certification exercise and especially concentrates on the elements I, B and Mo as examples of analytical work. Indicative values for Co, Cr, Fe, Cl and Na were also obtained. |
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Keywords: | certified reference material Rye grass Hay powder analytical quality control animal feed |
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