Determination of major and minor components in vanadium pentoxide by wavelength dispersive X-ray fluorescence spectrometry
DAN Juan, LIU Yuan-qing,CHEN Xiao-yi,LI Zi-jing,LIU Lin
Product Quality Supervision and Testing Institute of Panzhihua, National Center for Quality Supervision and Inspection of Vanadium and Titanium Products,Panzhihua 617000, China
Abstract：The sample was prepared by the fusion method. The mixed flux (mLi2B4O7∶mLiBO2=67∶33) was used to prepare the sample tablet in platinum-gold crucible. The ammonium nitrate was added as the oxidizing agent to avoid the loss of arsenic in fusion process. The results showed that the optimal conditions were as follows: the dilution ratio was 1∶13, and the melting temperature was 950 ℃. The high-purity reagent of vanadium pentoxide was used as matrix. The certified reference material was added to prepare the fusion tablet for the drawing of calibration curves of vanadium pentoxide, iron, phosphorus, silicon, arsenic, potassium oxide and sodium oxide as major and minor components. The determination method of major and minor components in vanadium pentoxide by X-ray fluorescence spectrometry (XRF) was established. The results indicated that the detection limit of minor components including iron, phosphorus, silicon, arsenic, potassium oxide and sodium oxide was 200, 100, 100, 100, 100 and 100 μg/g, respectively. The relative standard deviations (RSD) were less than 0.2%. The actual vanadium pentoxide sample was analyzed, and the found results were in good agreement with those obtained by the industrial standard method at present.
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DAN Juan,LIU Yuan-qing,CHEN Xiao-yi,LI Zi-jing,LIU Lin. Determination of major and minor components in vanadium pentoxide by wavelength dispersive X-ray fluorescence spectrometry. , 2015, 35(7): 48-53.
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