Extraction Chromatographic Separation of Germanium With Trioctylphosphine Okide

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Abstract
The solvent extraction methods for the separation of germanium are very limited. The carbon tetrachloride method had limited applications when large concentration of germanium was present(1). The extraction with tributyl phosphate was possible only in the presence of salting out agent(2). An attempt was made in this laboratory to separate germanium by reversed phase extraction chromatography from associated elements with tributyl phosphate as the stationary phase(3). No doubt this method permitted the separation of germanium from arsenic, indium, manganese, cobalt and zinc but it failed to separate germanium from commonly associated elements.

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