Alpha-spectrometric analysis of uranium and thorium using solid-phase extraction for sample preparation |
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| Affiliation: | 1. Department of Geoscience and NASA Astrobiology Institute, University of Wisconsin–Madison, Madison, WI 53706, USA;2. Department of Geology and Earth System Science Interdisciplinary Center, University of Maryland, College Park, MD 20742, USA;3. Trofimuk Institute of Petroleum Geology and Geophysics, Siberian Branch Russian Academy of Sciences, Novosibirsk 630090, Russia;4. Department of Geology and Geophysics, Novosibirsk State University, Novosibirsk 630090, Russia;5. Department of Geosciences, Virginia Tech, Blacksburg, VA 24061, USA;6. Department of Geological Sciences, University of North Carolina, Chapel Hill, NC 27599, USA |
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| Abstract: | A method is presented here for the preparation of thin uniform samples of naturally occurring uranium and thorium which are highly suitable for α-spectrometric analysis. The solid-phase extraction procedure simultaneously achieves a complete separation of the analytes from the sample matrix and a high enrichment factor for uranium and thorium, so that the ensuing eluate is ideally suited for either electrodeposition or ICP-MS, without the need for complicated and painstaking sample preparation. In contrast to conventional liquid–liquid phase-extraction methods, no organic waste solutions are produced, and the process can be easily automated. |
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