Abstract
Neutron-activation analysis results for four rare earth elements in standard silicate rocks, G-1 and W-1, are reported. An anion-exchange method for the separation of scandium, yttrium, samarium and lanthanum in good radiochemical purity has been developed. The method is based on the chromatographic elution of these elements from a Dowex 1 × 8 (nitrate form) resin column using methanol-nitric acid mixtures. The results obtained by this method are compared with values already available.
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