RADIONUCLIDE ANALYSIS USING SOLID-PHASE EXTRACTION DISKS

The use of solid phase extraction (SPE) disks was studied for the quan tification of selected radionuclides in aqueous solutions. The extract ion of four radionuclides using six types (two commercial, four test m aterials) of 3M Empore(TM) RAD disks was studied. The radionuclides st udied were: technetium-99 (two types of disks), cesium-137 (two types) , strontium-90 (one type), plutonium-238 (one type). Extractions were tested from DI water, liver water and seawater. Extraction efficiency, kinetics (flow rate past the disk), capacity, and potential interfere nces were studied as well as quantification methods.