Bestimmung des in form von Kassiterit vorkommenden Zinns
作者： Manfred Sager
DOI: 10.1007/BF00469586
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摘要: Zur Ermittlung des in Gesteinen als Kassiterit vorliegenden Zinnanteils wird die gemahlene Probe mit Ammoniodid einem Reagensglas zweimal sublimiert und anschliesend wasriger Weinsaure/Ascorbinsaure gelost. Nach Dekantieren Waschen unloslichen Ruckstandes erfolgt Zinnbestimmung Hydrid-AAS aus weinsaurer Losung; Querstorungen dieser Endbestimmung sind gering zu bezeichnen. Hauptproblem Kontaminationen den Gefasen, durch Spulen bzw. Stehenlassen verdunnter Weinsaure vermieden werden konnen.
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