Vacuum type XRF spectrometer EDX9000B determination of 15 rare earth elements in mixed rare earth mineral analyzer

Rare-earth yttrium and lanthanide collectively, electron configurations in 5 d, 6 s shell on the same number of electrons and their chemical properties are very similar, in analytical chemistry, a quantitative analysis of single rare earth elements is more difficult, at present, the photometric method has been able to detect and several single rare earth amount of total rare earth, volumetric method and gravimetric method can measure the total rare earth, because of the interference is serious, to the extraction and ion exchange separation, 15 single rare earth can be measured Lengthy separation process steps, the content of doesn’t satisfy the need of scientific research production. Emission spectrum by icp-aes and engage and atomic absorption method AAS is high sensitivity, applies only to low levels of analysis of rare earth; And X-ray fluorescence spectrometry (hereinafter referred to as the XRF method) analysis of single rare earth elements, especially for chemically similar elements such as the analysis of rare earth, niobium, tantalum, zirconium and hafnium, unique. XRF analyzer EDX9000B ore is a kind of quick analysis method without, from the first commercial X ray fluorescence spectrometer was developed in 1948, has so far of the periodic table can be Na – U more than 80 kinds of elements, in the geological, metallurgical machinery, building materials, petroleum chemical industry, environmental science and other fields, has been widely used.

Vacuum type XRF spectrometer EDX9000B determination of 15 rare earth elements in mixed rare earth mineral analyzer

We use 15 pure oxides of rare earth elements as the standard reference material, fused flux for Li2B407 made, according to the theory of “apparent concentration” to establish a simple quantitative analysis of mixed rare earth without standard. Use do not contain analysis of 14 rare earth elements fuse link elements and reagent blank, slice to zero with 100% content or other content analysis elements fuse link established for high content point calibration curve theory a coefficient was calculated by the model of FP, spectral overlap correction coefficient was calculated by the regression method, to correct interelement absorption enhancement effect and spectral overlap, with some samples of this method are investigated Scope of application and the accuracy of the results of the analysis, test shows that rare earth ore EDX9000B analyzer of the proceeds of the rare earth analysis results can satisfy the requirement of quantitative analysis.