螢光X線分析法およびICP発光分析法によるバストネサイト中の希土類元素の定量

概要

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An X-ray fluorescence (XRFS) and inductively coupled plasma atomic emission spectrometry (ICPAES) were applied to the determination of rare-earth elements in Bastnasite. Sample solutions were obtained by acid decomposition and sodium peroxide fusion. The XRFS of the glass bead sample was measured by selecting lines LaL_<α1>, CeL_<α1>, PrL_<β1>, NdL_<β1> and SmL_<β1>. The analytical lines of minimum interference for ICPAES were selected as, La : 379.478nm, Ce : 413.765nm, Pr : 422.293nm, Nd : 406.109,Sm : 446.734 and 443.432nm. Samarium was determined after the correction of spectral interferences from coexisting cerium by matching the contents of cerium of the standard and the sample. The emission intensities were corrected by matching the acid concentrations of the standard and the sample. The analytical results of La, Ce, Pr, Nd and Sm obtained by XRFS agreed well with those obtained by ICPAES. The measured value of cerium with sodium peroxide fusion was slightly larger than that with hydrochloric acid -hydrogen peroxide decomposition.bastnasitedissolution methodsrare-earth elementsdeterminationX-ray fluorescence spectrometryinductively coupled plasmaatomic emission spectrometry
東北大学の論文
1986-09-30