Measurement of<Superscript>99</Superscript>Tc in Savannah River Site high activity waste.

Waste cleanup efforts currently underway at the Savannah River Site have created a need to characterize<Superscript>99</Superscript>Tc in the various high activity waste matrices currently in Site inventories. The traditional method our laboratory used for analyzing<Superscript>99</Superscript>Tc in higher activity matrices was a solvent-solvent extraction method using Aliquat-336 in xylene. In an effort to eliminate the resulting generation of mixed wastes, a variety of different separation methodologies have been studied. Eichrom TEVA solid phase extractions using column technology have been employed in a case by case basis over the last several years. More recently, applications using Eichrom TEVA extraction discs and 3M Empore Tc extraction discs have also been explored. [ABSTRACT FROM AUTHOR]