APPLICATION OF241AM EDXRF TO DETERMINE HEAVY RARE EARTHS IN RE SEPARATION PROCESSES BY SOLVENT EXTRACTION

Abstract

A fast EDXRF analysis by using radioisotope, 241Am as an exciting source and high-purity Ge as a planar detector in heavy rare earth separation processes by solvent extraction has been investigated. Applying the method, heavy rare earth chloride aqueous samples in Er/Tm and Y/Er separation processes were off-line analyzed. The results show that the method can be used for a wide range of rare earth concentration(0.1 g/L - 300 g/L) with high accuracy.