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《化学分析计量》 2018年第04期
DOI:10.3969/j.issn.1008-6145.2018.04.017
X 射线荧光光谱法测定重稀土氧化物富集物中稀土元素含量
沈文馨,龚启亮,章效强
江西省分析测试研究所,南昌 330029 
Determination of rare earth elements in heavy rare earth oxide enrichment by X-ray fluorescence spectrometric method
沈文馨,龚启亮,章效强
(Jiangxi Province Analysis and Testing Institute, Nanchang 330029, China) 
摘要:建立了测定重稀土氧化物富集物中稀土元素的X 射线荧光光谱法。采用人工合成标准样品,按照样品与甲基纤维素质量1∶9 的比例,用甲基纤维素稀释粉末压片制样,用X 射线荧光光谱法测定重稀土氧化物富集物中的稀土元素含量。以D. Jongh 数学模式对谱线干扰和基体效应进行校正。15 种稀土元素测定结果的相对标准偏差为0.126%~3.654% (n=10),样品的测定值与计算值基本一致,回收率为94.00%~108.00%。其中La2O3,CeO2,r6O11和Nd2O3等轻稀土氧化物的检出限为0.11~0.22 mg/g。该方法简便快速、结果准确,能满足重稀土氧化物富集物中各稀土元素检测要求。 
Abstract:The method was set up for the determination of rare earth elements content in heavy rare earth oxide enrichment by X-ray fluorescence spectrometry. The synthetic specimen was used, pressed powder pellet that sample and methyl cellulose were diluted with a ratio of 1∶9. D. Jongh mathematical model was used to correct spectral line interference and the sample matrix effect. The relative standard deviations of determination results of 15 kinds of rare earth elements were in the range of 0.126%-3.654%(n=10). The determination values were in good agreement with calculated values, and the recovery rates were in the range of 94.00%-108.00%. The detection limits of some oxides of light rare earth elements such as La2O3, CeO2, Pr6O11 and Nd2O3 were in the range of 0.11-0.22 mg/g. This method is simple, rapid, accurate, and it is able to meet the requirements of determination of rare earth elements in heavy rare earth oxide enrichment. 
关键词:重稀土氧化物富集物;X 射线荧光光谱法;稀土元素;粉末压片 
Keywords:heavy rare earth oxide enrichment; X-ray fluorescence spectrometric method; rare earth element; pressed powder pellet 
本文引用格式:
沈文馨,龚启亮,章效强. X射线荧光光谱法测定重稀土氧化物富集物中稀土元素含量[J].化学分析计量,2018,27(4):69-73.
SHEN W X,GONG Q L,ZHANG X Q. Determination of rare earth elements in heavy rare earth oxide enrichment by X-ray fluorescence spectrometric method[J]. Chemical analysis and meterage,2018,27(4):69-73. 

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