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

Godelitsas, A; Kokkoris, M; Chatzitheodoridis, E; Misaelides, P

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