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dc.contributor.authorConstantinou, Elenien
dc.contributor.authorPashalidis, Ioannisen
dc.creatorConstantinou, Elenien
dc.creatorPashalidis, Ioannisen
dc.date.accessioned2019-11-21T06:18:15Z
dc.date.available2019-11-21T06:18:15Z
dc.date.issued2011
dc.identifier.urihttp://gnosis.library.ucy.ac.cy/handle/7/55377
dc.description.abstractThe aim of this study is the separation and pre-concentration of thorium from aqueous solutions by cloud point extraction (CPE) and its the radiometric determination by liquid scintillation counting (LSC). For CPE, tributyl phosphate (TBP) was used as the complexing agent and (1,1,3,3-Tetramethylbutyl) phenyl-polyethylene glycol (Triton X-114) as the surfactant. The radiometric measurements were performed after phase separation by mixing of the surfactant phase with the liquid scintillation cocktail. The effect of experimental conditions such as pH, ionic strength (e.g. [NaCl]) and the presence of other chemical species (e.g. Ca2+ and Fe3+ ions, and humic acid colloids) on the CPE separation recovery have been investigated at constant reactant ratio (m(TBP)/m(Triton) = 0.1). According to the experimental results the maximum chemical recovery is (60 ± 5)% at pH 3. Regarding the other parameters, generally Ca2+ and Fe3+ ions as well as the presence of colloidal species in solution (even at low concentrations) results in significant decrease of the chemical recovery of uranium. On the other hand increasing NaCl concentration leads to enhancement of chemical recovery. Generally, the method could be applied successfully for the radiometric determination of thorium in water solutions with relatively increased thorium content. © 2010 Akadémiai Kiadó, Budapest, Hungary.en
dc.sourceJournal of Radioanalytical and Nuclear Chemistryen
dc.source.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-78751612014&doi=10.1007%2fs10967-010-0677-3&partnerID=40&md5=553d8b390b45ffa8db45b8243cc375e0
dc.subjectarticleen
dc.subjectcontrolled studyen
dc.subjectchemical analysisen
dc.subjectmacrogolen
dc.subjectsodium chlorideen
dc.subjectferric ionen
dc.subjectconcentration (parameters)en
dc.subjectAqueous solutionsen
dc.subjectaqueous solutionen
dc.subjectpHen
dc.subjectwateren
dc.subjectionic strengthen
dc.subjecturaniumen
dc.subjectcalcium ionen
dc.subjectradiometryen
dc.subjectLiquid scintillation countingen
dc.subjectwater analysisen
dc.subject4 tert octylphenolen
dc.subjectCloud point extractionen
dc.subjectmetal extractionen
dc.subjectmetal recoveryen
dc.subjectphase separationen
dc.subjectradiochemistryen
dc.subjectseparation techniqueen
dc.subjectThoriumen
dc.subjecttributyl phosphateen
dc.subjecttriton x 114en
dc.titleThorium determination in water samples by liquid scintillation counting after its separation by cloud point extractionen
dc.typeinfo:eu-repo/semantics/article
dc.identifier.doi10.1007/s10967-010-0677-3
dc.description.volume287
dc.description.issue1
dc.description.startingpage261
dc.description.endingpage265
dc.author.faculty002 Σχολή Θετικών και Εφαρμοσμένων Επιστημών / Faculty of Pure and Applied Sciences
dc.author.departmentΤμήμα Χημείας / Department of Chemistry
dc.type.uhtypeArticleen
dc.description.notes<p>Cited By :11</p>en
dc.source.abbreviationJ.Radioanal.Nucl.Chem.en
dc.contributor.orcidPashalidis, Ioannis [0000-0002-7587-6395]
dc.gnosis.orcid0000-0002-7587-6395


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