Matrix Effect of Fe and Ca on EDXRF Analysis of Ce Concentration in Bayan Obo Ores
QI Hai-jun1, 2, WANG Jian-ying1, ZHANG Xue-feng1*, WANG Yang1, 2
1. Key Laboratory of Integrated Exploitation of Bayan Obo Multi-Metal Resources, Inner Mongolia University of Science and Technology, Baotou 014010, China 2. Mathematical and Biological Engineering College, Inner Mongolia University of Science and Technology, Baotou 014010, China
Abstract：When Energy-Dispersive X-RayFluorescence(EDXRF)used for measuring cerium (Ce) content in the Bayan Obo ores, matrix effect mainly comes from iron (Fe) and calcium (Ca). Due to extensive concentration variability of the two elements, commonly employed standard sample method for matrix effect correction is invalid. To overcome the problem, testing samples were prepared based on the average contents of elements in the Bayan Obo ores, and the influence of Fe and Ca on the coefficient in a linear relationship between Ce content and XRF signal was determined by linear least squares fitting for multivariate analysis. The coefficients thus determined reflected the matrix effect on Ce emitted fluorescence from Fe emitted fluorescence and Ca absorption. When the coefficients were used in analyzing Ce content in Bayan Obo mine by EDXRF, the relative error is less than 10%.
齐海君1，2，王建英1，张雪峰1*，汪 洋1，2 . 白云鄂博矿中铈铁钙EDXRF分析的基体效应研究 [J]. 光谱学与光谱分析, 2015, 35(12): 3510-3513.
QI Hai-jun1, 2, WANG Jian-ying1, ZHANG Xue-feng1*, WANG Yang1, 2 . Matrix Effect of Fe and Ca on EDXRF Analysis of Ce Concentration in Bayan Obo Ores . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2015, 35(12): 3510-3513.
