Rapid separation and purification of uranium and plutonium from dilute-matrix samples |
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Authors: | Christopher R Armstrong Brian W Ticknor Gregory Hall James R Cadieux |
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Institution: | 1. Nonproliferation Technology Section, Savannah River National Laboratory, Aiken, SC, 29808, USA
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Abstract: | This work describes a streamlined approach to the separation and purification of trace uranium and plutonium in environmental swipe samples that contain a small amount of collected bulk material. We describe key modifications to conventional techniques that result in a relatively rapid, safe, cost-effective, and efficient U and Pu separation process. Simulated samples were produced by loading appropriate 235U, 238U, and 240Pu onto high purity cotton swipes. Uranium concentration and isotopic composition were measured by multi-collector inductively coupled mass spectrometry. Corresponding plutonium measurements were conducted with a three stage thermal ionization mass spectrometer. Quantitative U and Pu recoveries were observed with this method. |
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