电感耦合等离子体发射光谱(ICP-OES)法测定锗精矿中锗量  

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

作　　者：苏春风 SU Chunfeng(BGRIMM MTC Technology Co.Ltd.,Beijing,102628,China)

机构地区：[1]北矿检测技术有限公司,北京102628

出　　处：《中国无机分析化学》2020年第4期51-55,共5页Chinese Journal of Inorganic Analytical Chemistry

基　　金：国家重大科学仪器设备开发重点专项(2016YFF0102500)。

摘　　要：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。通过对溶样方法、称样量、磷酸添加量的选择、酸度、干扰以及与国家标准方法比对等实验,选择209.426 nm作为最优分析谱线,锗的检出限为0.006μg/mL,测定下限为0.020μg/mL,在磷酸基体匹配的条件下测定,与经典碘酸钾滴定法对比,测定范围为1%~15%,数据一致,相对标准偏差<3%(n=11),加标回收率为98.6%~101%,能够满足快速测定及批量处理锗精矿中1%~15%的锗含量需求。A method for the determination of germanium in germanium concentrate by inductively coupled plasma optical emission spectrometry(ICP-OES)was established.The sample was digested in nitric acid,hydrofluoric acid,and phosphoric acid.Through the experiments of sample dissolving method,sample weighing,selecting the amount of phosphoric acid added,acidity test,interference test and comparison with the national standard method,when choose 209.426 nm as the optimal analytical spectral lines,the detection limit of germanium was 0.006μg/mL,the lower limit was 0.020μg/mL,under the condition of phosphate matrix matching measurement,compared with classical potassium iodate titration,measurement range was 1%—15%,the relative standard deviation(SRD)less than 3%(n=11),the standard recovery rate is 98.6%—101%,which can meet the requirements of rapid determination and batch processing of germanium content in germanium concentrate.

关 键 词：电感耦合等离子体发射光谱法 锗精矿 锗 

分 类 号：O657.31[理学—分析化学] TH744.11[理学—化学]