电感耦合等离子体发射光谱法测定锗精矿中锗量

建立了用硝酸、氢氟酸、磷酸溶解样品,电感耦合等离子体发射光谱法测定锗精矿中锗量的方法。试验选择209.426nm作为最优分析谱线,锗的检出限为0.006μg/mL,测定下限为0.020 μg/mL,在磷酸基体匹配的条件下测定,测定范围为1%-15%,与经典碘酸钾滴定法对比,数据一致,相对标准偏差<3%(n=11),加标回收率98%~101%,能够满足快速测定及批量处理锗精矿中1%-15%的锗含量的需求。

Determination of Germanium Content in Germanium Concentrate by Inductively Coupled Plasma Optical Emission Spectrometry

A method for the determination of germanium in germanium concentrate by inductively coupled plasma emission spectrometry (ICP-OES) was established. The sample was digested in nitric acid , hydrofluoric acid, and phosphoric acid. The detection limit of germanium was 0.006 g/mL, the lower limit was 0.020 g/mL, and the range was 1%-15%, which was consistent with the classical potassium iodate titration method. The relative standard deviation (SRD) less than 3% (n=11), the standard recovery rate is 98%~101%, which can meet the requirements of rapid determination and batch processing of germanium content in germanium concentrate.