Radiometric Determination of Uranium in Natural Waters after Enrichment and Separation by Cation-Exchange and Liquid-Liquid Extraction

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dc.creatorPashalidis, I.
dc.creatorTsertos, H.
dc.date2003-04-28
dc.date.accessioned2026-07-07T05:49:06Z
dc.date.available2026-07-07T05:49:06Z
dc.descriptionThe alpha-radiometric determination of uranium after its pre-concentration from natural water samples using the cation-exchange resin Chelex-100, its selective extraction by tributylphosphate and electrodeposition on stainless steel discs is reported. The validity of the separation procedure and the chemical recoveries were checked by addition of uranium standard solution as well as by tracing with U-232. The average uranium yield was determined to be (97 +- 2) % for the cation-exchange, (95 +- 2) % for the liquid-liquid extraction, and more than 99% for the electrodeposition. Employing high-resolution alpha-spectroscopy, the measured activity of the U-238 and U-234 radioisotopes was found to be of similar magnitude; i.e. ~7 mBq/L and ~35 mBq/L for ground- and seawater samples, respectively. The energy resolution (FWHM) of the alpha-peaks was 22 keV, while the Minimum Detectable Activity (MDA) was estimated to be 1 mBq/L (at the 95% confidence limit).
dc.description13 pages including 2 figures; To appear in Journal Radionalytical and Nuclear Chemistry
dc.identifierhttps://arxiv.org/abs/physics/0304103
dc.identifierhttp://arxiv.org/abs/physics/0304103
dc.identifierJ.Radioanal.Nucl.Chem. 260 (2004) 439-442
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/85273
dc.subjectMedical Physics
dc.subjectNuclear Experiment
dc.subjectPhysics and Society
dc.titleRadiometric Determination of Uranium in Natural Waters after Enrichment and Separation by Cation-Exchange and Liquid-Liquid Extraction
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