caa a22 4500 465747302 CHVBK 20180323111824.0 cr unu---uuuuu 170327e19900101xx s 000 0 eng 10.1007/BF00321977 doi (NATIONALLICENCE)springer-10.1007/BF00321977 Comparison of standard materials for the establishment of calibration curves in solid sampling graphite furnace atomic absorption spectrometry. Direct determination of copper in powdered biological samples [Elektronische Daten] [Ikuo Atsuya, Kunihiko Akatsuka, Kohji Itoh] Summary: The selection of standard materials for the establishment of calibration curves is one of the most important problems in the direct analysis of biological samples by GFAAS. Three kinds of standard materials, NBS tomato leaves, coprecipitates with magnesium oxinate and Ni/DMG/PAN were investigated. It was found that it is possible to use both the NBS-SRM and the synthetic reference material prepared by coprecipitation with magnesium oxinate as standard materials for the direct determination of copper in several biological samples issued from NBS and NIES. However, too low results are obtained when the synthetic reference material prepared by coprecipitation with Ni/DMG/PAN is used. In order to clarify this, the effects of nickel and magnesium were examined and the role of magnesium was discussed. Springer-Verlag, 1990 Atsuya Ikuo Kitami Institute of Technology, 165 Koen-cho, 090, Kitami, Japan aut Akatsuka Kunihiko Kitami Institute of Technology, 165 Koen-cho, 090, Kitami, Japan aut Itoh Kohji Kitami Institute of Technology, 165 Koen-cho, 090, Kitami, Japan aut Fresenius' Journal of Analytical Chemistry Springer-Verlag 337/3(1990-01-01), 294-298 0937-0633 337:3<294 1990 337 216 https://doi.org/10.1007/BF00321977 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00321977 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Atsuya Ikuo Kitami Institute of Technology, 165 Koen-cho, 090, Kitami, Japan aut NATIONALLICENCE 700 1- Akatsuka Kunihiko Kitami Institute of Technology, 165 Koen-cho, 090, Kitami, Japan aut NATIONALLICENCE 700 1- Itoh Kohji Kitami Institute of Technology, 165 Koen-cho, 090, Kitami, Japan aut NATIONALLICENCE 773 0- Fresenius' Journal of Analytical Chemistry Springer-Verlag 337/3(1990-01-01), 294-298 0937-0633 337:3<294 1990 337 216 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer