caa a22 4500 465748929 CHVBK 20180323111828.0 cr unu---uuuuu 170327e19900101xx s 000 0 eng 10.1007/BF00322516 doi (NATIONALLICENCE)springer-10.1007/BF00322516 Preliminary assessment of homogeneity of new candidate agricultural/food reference materials [Elektronische Daten] [M. Ihnat, M. Stoeppler] Summary: In an effort to bring to the analytical community new natural matrix reference materials (RM's) for elemental composition quality control, ten new agricultural/food candidate reference materials prepared previously, were characterized for homogeneity. The materials include bovine muscle powder, whole egg powder, corn bran, microcrystalline cellulose, wheat gluten, whole milk powder, corn starch and three wheat flours representing a wide range of matrix types and elemental composition. Characterization was for up to some twenty five major, minor, trace and ultratrace elements of nutritional, toxicological and environmental significance. Solid sampling electrothermal atomic absorption spectrometry was applied to the determination of copper and lead in sub-milligram subsamples. A variety of other analytical techniques via an interlaboratory cooperative effort was used to determine many other elements in 100-2000 mg subsample sizes. Good material homogeneity was observed for virtually all materials and analytes with the exception of Cr and Pb in limited instances. The materials were thus deemed suitable for detailed characterization of elemental concentration to lead to recommended values and to bring these biological products to reference material status. Springer-Verlag, 1990 Ihnat M. Land Resource Research Centre, Research, Branch Agriculture Canada, K1A 0C6, Ottawa, Ontario, Canada aut Stoeppler M. Institut für Angewandte Physikalische Chemie, Kernforschungsanlage (KFA) Jülich GmbH, Postfach 1913, D-5170, Jülich 1, Federal Republic of Germany aut Fresenius' Journal of Analytical Chemistry Springer-Verlag 338/4(1990-01-01), 455-460 0937-0633 338:4<455 1990 338 216 https://doi.org/10.1007/BF00322516 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00322516 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ihnat M. Land Resource Research Centre, Research, Branch Agriculture Canada, K1A 0C6, Ottawa, Ontario, Canada aut NATIONALLICENCE 700 1- Stoeppler M. Institut für Angewandte Physikalische Chemie, Kernforschungsanlage (KFA) Jülich GmbH, Postfach 1913, D-5170, Jülich 1, Federal Republic of Germany aut NATIONALLICENCE 773 0- Fresenius' Journal of Analytical Chemistry Springer-Verlag 338/4(1990-01-01), 455-460 0937-0633 338:4<455 1990 338 216 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer