Abstract：The praseodymium-neodymium-gadolinium alloy have advantages of stable chemical?component and low?concentration?of harmful elements. Therefore, praseodymium-neodymium alloy and Gd could be replaced by the alloy, which were raw?materials of yieldding magic materials Nd-Fe-B. The praseodymium-neodymium-gadolinium alloy sample was dissolved in?nitric?acid and rare earth impurities in the sample were detected by ICP-OES with the?matrix matching method. Interference experiments showed that coexisting?element?interference?could be ignored for the chosen spectrum lines, and the change of praseodymium neodymium gadolinium relative ratio had little effect on determination?results.?The method was successfully used to determine synthetic?sample with RSD no more than 10% (n=10) and recovery between 95.0%~120.0%. The comparision?experiments’ results of ICP-OES and ICP-MS were essentially ?consistent.
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2021, Vol. 28 