GB/T 23513.1-2009 《Chemical analysis methods for germanium concentrate - Part 1: Determination of germanium content - Potassium iodate titration》 Related products

This standard specifies a method for the determination of germanium content in germanium concentrates, which is suitable for germanium concentrates with a germanium content range of 1.0% to 70%. The determination method uses the potassium iodate Titrimetric method, first by melting the sample with sodiumhydrate, and using phosphoric acid and potassiumhy permanganate to inhibit the interference of arsenic, antimony, tin and other elements. Then, in a mixed solution of phosphoric acid and muriatic acid, tetravalent germanium is reduced to divalent germanium with sodium hypophosphoric acid, starch is used as an indicator, and titration is carried out with potassium iodate standard solution below 20 ° C. This method ensures the accurate determination of germanium content and is suitable for the analysis of various germanium concentrates.