caa a22 4500 465749658 CHVBK 20180323111830.0 cr unu---uuuuu 170327e19900101xx s 000 0 eng 10.1007/BF00321876 doi (NATIONALLICENCE)springer-10.1007/BF00321876 Trace analysis of germanium [Elektronische Daten] Part 1. Some new aspects for the determination by extraction-spectrophotometry and atomic absorption spectrometry [Christine Schleich, Günter Henze] Summary: The comparative and supplementary investigations for the determination of traces of germanium by extraction-spectrophotometry and atomic absorption spectrometry serve for the development of suitable multi-stage combined procedures for the analysis of biological samples. The improved spectrophotometric determination by phenyl-fluorone after extraction of germanium tetrachloride with CCl4 instead of MIBK is of higher precision. A detection limit of 5 ng Ge ml−1 with s=±6% was obtained. The investigations for the determination of germanium by atomic absorption spectrometry with electrothermal atomisation show the best sensitivity using alkaline samples or in the presence of an oxidant, e.g. nitric acid or nitrates. Interferences caused by several salts may be eliminated for the most part with palladium nitrate and magnesium nitrate as modifier. The detection limit is 20 ng Ge ml−1 with a relative standard deviation of ±8%. Springer-Verlag, 1990 Schleich Christine Department of Inorganic and Analytical Chemistry, University of Trier, P. O. Box 3825, D-5500, Trier, Federal Republic of Germany aut Henze Günter Department of Inorganic and Analytical Chemistry, University of Trier, P. O. Box 3825, D-5500, Trier, Federal Republic of Germany aut Fresenius' Journal of Analytical Chemistry Springer-Verlag 338/2(1990-01-01), 140-144 0937-0633 338:2<140 1990 338 216 https://doi.org/10.1007/BF00321876 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00321876 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Schleich Christine Department of Inorganic and Analytical Chemistry, University of Trier, P. O. Box 3825, D-5500, Trier, Federal Republic of Germany aut NATIONALLICENCE 700 1- Henze Günter Department of Inorganic and Analytical Chemistry, University of Trier, P. O. Box 3825, D-5500, Trier, Federal Republic of Germany aut NATIONALLICENCE 773 0- Fresenius' Journal of Analytical Chemistry Springer-Verlag 338/2(1990-01-01), 140-144 0937-0633 338:2<140 1990 338 216 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer