Radiochemical determination of 241Am and Pu(alpha) in environmental materials.

摘要: Americium-241 and plutonium determinations will become of greater importance over the coming decades as 137Cs 241Pu decay. The impact on environmental chronology has been great, but its potency is waning it decays diffuses. Having 241Am Pu unequivocal markers for 1963 weapon fallout maximum important short time scale work, a fast reliable procedure required their separation. developed method described here begins by digesting samples using lithium borate fusion although an aqua regia leachate also effective in many instances. Isolation Am then achieved combination extraction chromatography conventional anion exchange chromatography. whole optimized, validated, assessed safety. straightforwardness this technique permits analysis large numbers makes 241Am-based techniques high-resolution sediment accumulation rate studies attractive. In addition, can be employed sequential measurement surveillance programs, potentially reducing analytical costs turnround times.