Abstract
A radiochemical neutron activation method for the determination of rare earth elements (REE) in periodolitic rocks is presented. The procedure involves a post irradiation sample solution with a mixture of H2F2, HNO3, IHClO4 and HCl and the selective sorption of REE by cation exchange. Most of the elements which will interfere with their precise determination are separated before the REE arc cluted. 88Y-Tracer is used to monitor the chemical yield. The procedure is capable of providing precise REE data for La, Ce, Sm, Nd, Eu, Tb, Yb and Lu. The advantage of the radiochemical method is demonstrated by comparison of BEE-contents and their standard deviations by radiochemical and instrumental neutron activation analysis.
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