Stable Sr Vs 85sr Sorption from Simulated Waste Solutions by Mst and Mmst.

摘要

A series of tests were performed to examine the sorption of stable Sr versus the sorption of (sup 85)Sr by monosodium titanate (MST) and modified monosodium titanate (mMST) from simulated waste solutions. Earlier testing indicated a discrepancy between the decontamination factors (DFs) obtained by measuring the stable Sr concentrations by inductively coupled plasma - mass spectroscopy (ICP-MS) and the (sup 85)Sr activities by gamma spectroscopy. One hypothesis to explain this discrepancy was that the stable Sr and (sup 85)Sr were in different chemical forms in the simulated solutions. Several simulants were prepared using different methods for adding the Sr and performance tests were carried out using MST and mMST to determine the Sr and (sup 85)Sr DFs with the various simulants. Testing indicated no discrepancy between the Sr and (sup 85)Sr DFs in tests with these simulants.