CAJ | 학술논문

实验采用电感耦合等离子发射光谱法来测定锂制品中的Cu、Pb、Zn、Ni、Ca、Mg、Mn、Cd等杂质元素量，确定了用硝酸（1+1）10 mL分解样品以及选择锂浓度为5 mg/mL基体效应最小；选择了适合本实验分析用的波长（Zn：213.856 nm；Ca：396.847 nm；Cd：228.802 nm；Cu：324.754 nm；Mg：280.270 nm；Mn：259.373 nm；Ni：231.604 nm；Pb：220.353 nm）；仪器功率选择1000 W；通过实验得出加标回收率为92%～110%，相对标准偏差小于5%；并确定Mn、Cd、Ni 、Zn的测定范围为0.00005%～0.0080%，Ca、Cu、Mg 0.0001%～0.0080%，Pb为0.0002%～0.0080%.
실험채용전감우합등리자발사광보법래측정리제품중적Cu、Pb、Zn、Ni、Ca、Mg、Mn、Cd등잡질원소량，학정료용초산（1+1）10 mL분해양품이급선택리농도위5 mg/mL기체효응최소；선택료괄합본실험분석용적파장（Zn：213.856 nm；Ca：396.847 nm；Cd：228.802 nm；Cu：324.754 nm；Mg：280.270 nm；Mn：259.373 nm；Ni：231.604 nm；Pb：220.353 nm）；의기공솔선택1000 W；통과실험득출가표회수솔위92%～110%，상대표준편차소우5%；병학정Mn、Cd、Ni 、Zn적측정범위위0.00005%～0.0080%，Ca、Cu、Mg 0.0001%～0.0080%，Pb위0.0002%～0.0080%.
The inductively coupled plasma emission spectrometry is adopted to determine the amount of common impurity elements in the lithium products. Many influence factors, such as the sample decomposition and the influence of matrix effect on determination, selection of suitable analytical spectral lines (Zn:213.856 nm;Ca:396.847 nm;Cd:228.802 nm;Cu:324.754 nm;Mg:280.270 nm;Mn:259.373 nm;Ni:231.604 nm;Pb:220.353 nm) and instrument power (1 000 W) are chosen to find out that the recovery rate is 92%-110%, relative standard deviation is less than 5%. The content of Cu, Pb, Zn, Ni, Ca, Mg, Mn and Cd in the best conditions have been determined(Mn、Cd、Ni、Zn 0.000 05%~0.008 0%,Ca、Cu、Mg 0.000 1%~0.008 0%,Pb 0.000 2%~0.008 0%).