Spectroscopic characterization of Greek dolomitic marble surface interacted with uranium and thorium in aqueous solutions

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dc.contributor.author Godelitsas, A en
dc.contributor.author Kokkoris, M en
dc.contributor.author Chatzitheodoridis, E en
dc.contributor.author Misaelides, P en
dc.date.accessioned 2014-03-01T01:29:13Z
dc.date.available 2014-03-01T01:29:13Z
dc.date.issued 2008 en
dc.identifier.issn 0168-583X en
dc.identifier.uri https://dspace.lib.ntua.gr/xmlui/handle/123456789/19164
dc.subject 12C-Rutherford Backscattering Spectroscopy en
dc.subject Actinides en
dc.subject Dolomite en
dc.subject Laser μ-Raman Spectroscopy en
dc.subject Marble en
dc.subject Thorium en
dc.subject Uranium en
dc.subject.classification Instruments & Instrumentation en
dc.subject.classification Nuclear Science & Technology en
dc.subject.classification Physics, Atomic, Molecular & Chemical en
dc.subject.classification Physics, Nuclear en
dc.subject.other Raman spectroscopy en
dc.subject.other Scanning electron microscopy en
dc.subject.other Surface properties en
dc.subject.other Thorium en
dc.subject.other Uranium en
dc.subject.other X ray powder diffraction en
dc.subject.other Atomic proportion en
dc.subject.other Dolomitic marble en
dc.subject.other Marble en
dc.title Spectroscopic characterization of Greek dolomitic marble surface interacted with uranium and thorium in aqueous solutions en
heal.type journalArticle en
heal.identifier.primary 10.1016/j.nimb.2008.03.073 en
heal.identifier.secondary http://dx.doi.org/10.1016/j.nimb.2008.03.073 en
heal.language English en
heal.publicationDate 2008 en
heal.abstract The surface of a typical Greek (Thassian) dolomitic marble was studied after interaction with U- and Th-containing aqueous solutions (1000 mg/L, free-drift experiments for 1 week at atmospheric P-CO2), using C-12-RBS and Laser mu-Raman spectroscopy. Powder-XRD and SEM-EDS were also applied to investigate the phases deposited on the surface of the interacted samples. The obtained results indicated a considerable removal of U from the aqueous medium mainly due to massive surface precipitation of amorphous UO2-hydroxide phases forming a relatively thick (mu m-sized) coating on the carbonate substrate. The interaction of Th with dolomitic marble surface is also intense leading to a formation of an amorphous Th-hydroxide layer of similar thickness but of significantly lower elemental atomic proportion. (C) 2008 Elsevier B.V. All rights reserved. en
heal.publisher ELSEVIER SCIENCE BV en
heal.journalName Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms en
dc.identifier.doi 10.1016/j.nimb.2008.03.073 en
dc.identifier.isi ISI:000257185600060 en
dc.identifier.volume 266 en
dc.identifier.issue 10 en
dc.identifier.spage 2363 en
dc.identifier.epage 2366 en

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