Authors: Smeer Durani M Krishnakumar K Satyanarayana
Publish Date: 2012/01/10
Volume: 294, Issue: 2, Pages: 215-220
Abstract
A simple effective and low cost solid phase extraction procedure was standardized for the trace and ultratrace level determination of rare earth impurities such as Ce Dy Sm Gd Eu Er etc which act as neutron poisons in nuclear grade uranium oxide U3O8 999 by weight The method involves selective separation of these elements as their fluorides with the help of activated charcoal from major uranium matrix followed by determination by ICPMS and high resolution ICPOES The residual uranium content of the solution was 10 μg/mL The recovery of REEs ranges from 85 to 105 The method was validated with nuclear grade uranium oxide standards CRMI to CRMV BARC Mumbai India in addition to some synthetic standards The RSD of the method was ±12 n = 3
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