RAPID METHOD FOR PLUTONIUM, AMERICIUM AND CURIUM IN VERY LARGE SOIL SAMPLES Page: 3 of 27
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Abstract
The analysis of actinides in environmental soil and sediment samples is very important
for environmental monitoring. There is a need to measure actinide isotopes with very low
detection limits. A new, rapid actinide separation method has been developed and
implemented that allows the measurement of plutonium, americium and curium isotopes in
very large soil samples (100-200 g) with high chemical recoveries and effective removal of
matrix interferences. This method uses stacked TEVA Resin , TRU Resin and DGA-
Resin cartridges from Eichrom Technologies (Darien, IL, USA) that allows the rapid
separation of plutonium (Pu), americium (Am), and curium (Cm) using a single multi-
stage column combined with alpha spectrometry. The method combines an acid leach step
and innovative matrix removal using cerium fluoride precipitation to remove the difficult
soil matrix. This method is unique in that it provides high tracer recoveries and effective
removal of interferences with small extraction chromatography columns instead of large
ion exchange resin columns that generate large amounts of acid waste. By using vacuum
box cartridge technology with rapid flow rates, sample preparation time is minimized.
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Maxwell, S. RAPID METHOD FOR PLUTONIUM, AMERICIUM AND CURIUM IN VERY LARGE SOIL SAMPLES, article, January 8, 2007; [Aiken, South Carolina]. (https://digital.library.unt.edu/ark:/67531/metadc883160/m1/3/: accessed April 19, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.