Abstract：The sample was dissolved by HNO3 and added with ammonia to generate precipitates, which was then filtered by ashless filter paper. The residues were burned and fused into test portion slice with mixed flux of Li2B4O7-LiBO2. The test portion slice were determined by a wavelength dispersive X-ray fluorescence spectrometer. Thus, a determination method for lanthanum, cerium, praseodymium and neodymium in La-Ce-Pr-Nd rare earth alloys was established by X-ray fluorescence spectrometry(XRF)with fusion sample preparation. The calibration sample was prepared by highly pure substance. The spectrum overlapping interference was corrected by interference coefficient method, while the matrix effect was corrected by variable theoretical α influence coefficient method (COAL model). The method precision and recovery was tested. The relative standard deviation (RSD, n=11) was below 2 %. The recoveries were between 98% and 101%. By analyzing the actual sample of La-Ce-Pr-Nd rare earth alloys, it was found the results were consistent with those of inductively coupled plasma atomic emission spectrometry.
普旭力, 蔡继杰, 王伟, 潘忠厚, 王鸿辉. 熔融制样-X射线荧光光谱法测定镧铈镨钕稀土合金[J]. 冶金分析, 2015, 35(1): 34-37.
PU Xu-li, CAI Ji-jie, WANG Wei, PAN Zhong-hou, WANG Hong-hui. Determination of lanthanum-cerium-praseodymium-neodymium rare earth alloy by X-ray fluorescence spectrometry with fusion sample preparation. , 2015, 35(1): 34-37.
