Zum Nachweis von Germanium

Abstract

Es wird eine Methode zum Nachweis kleinster Germaniummengen angegeben, darauf beruhend, daß das Germanium durch Destillation von den Begleitelementen getrennt und im Destillate nach einer Konzentrationsfällung mit Schwefelwasserstoff spektrographisch erkannt wird. Da 2–3 γ Germanium neben größeren Mengen Fremdstoffen mit Sicherheit zu erkennen sind, ist die Methode für die Mineralanalyse brauchbar, wie an einigen Beispielen dargetan wird.

Spectrochemical Determination of Germanium in Silicates

“…1 Present address, Dominion Laboratory, Wellington, New Zealand. Specific methods of enrichment usually involved the distillation of germanium as chloride, and its precipitation as sulfide, prior to its spectrographic determination (1,3). Geilmann and Brunger (3) could detect 0.25 y of germanium in this way in a semiquantitative examination.…”

Analytical Methods for Germanium

“…The arc spectrum of germanium has been studied in the range 2198.7 to 4686 A. on a quantitative basis, the amount of the element present being estimated by the appearance or nonappearance of the various lines (77,78). When only traces of germanium are present, it must be concentrated (15,41,64,84,89,90,106). Quantities of germanium as small as 1 microgram in 1 gram of uranium (99) and as high as 5.0% in zinc sulfide ores (93) have been determined spectroscopically.…”