【摘要】 本文采用 JY38 Ⅲ型(法国)顺序扫描式等离子体光谱仪测定混合稀土试样中的全部稀土元素和Al、Fe、Pb、Ca 及 Si 进行了分析研究。并对谱线干扰、背景影响、共存元素影响以及标样与试样中基体匹配等问题进行了考察。在折衷工作条件下,对稀土工艺流程中的实际样品进行了分析,结果满意。更多还原

【Abstract】 A method for direct determination of 15 rare earth elements and Al,Ca,Fe,Pb,Si in mixtures of rare earth oxides is described by using JY38 sequential ICP spectrometer.The selection of the analytical lines, background deduction,matrix and co-existing elements interferences were studied.The effects of matrix(REE) may be eliminated by matching technique between samples and standard solutions for determination of non- rare earth elements.Under the experimental conditions the detection limits for rare earth elements are 0.4～ 6.9 ng/ml,for non-rare earth elements are 3.1～5.92 ng/ml;and the relative standard deviation in the range of 0.18 to 2.3%(n=5).The proposed method has been applied to the analysis the mixtures of rare earth oxides,and results for 15 rare earth elements are in good agreement with those obtained by X-ray fluorescence spectrometry.This method can be applied to the routine analysis in rare earth industry.更多还原