冷焰ICP-MS法测定高纯稀土氧化物中铁和钙的研究  

Study on Analytical Method for Iron and Calcium in High Purity Rare Earth Oxides by ICP MS using Cold Plasma Technique

作　　者：刘鹏宇[1,2] 刘文华[1,2] 

机构地区：[1]北京有色金属研究总院 [2]北京科技大学化学系

出　　处：《分析试验室》1999年第2期74-76,共3页Chinese Journal of Analysis Laboratory

摘　　要：用冷焰技术对高纯稀土氧化物中Ｆｅ和Ｃａ的分析方法进行了研究。估算了测定范围和检出限，探讨了内标元素对基体影响的校正作用，测定了加标回收率，对半定量法（ＴＱ）和定量法（ＱＡ）的结果作了比较。表明冷焰条件下，痕量Ｆｅ的测定是可行的，但Ｃａ的测定结果仍不理想；ＱＡ法明显优于ＴＱ法。The analytical method for iron and calcium in high purity rare earth oxides was studied by ICP MS using cold plasma technique.The linear calibration ranges and detection limits were estimated. The calibrated results of internal standard elements for the matrix effect was investigated using semiquantitative method(TQ) and quantitative method(QA) .The results obtained from the analysis and the recovery test for the standard samples have proved that the method for analysis of trace iron is feasible with cobalt as an internal standard element;but is still unacceptable for the determination of calcium in high purity rare earth oxides;and QA method is preferable to TQ method obviously

关 键 词：ICP MS 冷焰 高纯稀土 铁 钙 稀土 杂质 

分 类 号：TQ133.3[化学工程—无机化工] O614.811[理学—无机化学]