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

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Title: Spectroscopic characterization of Greek dolomitic marble surface interacted with uranium and thorium in aqueous solutions
Authors: Godelitsas, A.1 agodel@geol.uoa.gr, Kokkoris, M.2, Chatzitheodoridis, E.3, Misaelides, P.4
Source: Nuclear Instruments & Methods in Physics Research Section B. May2008, Vol. 266 Issue 10, p2363-2366. 4p.
Subjects: Spectrum analysis, Marble, Uranium, Thorium
Abstract: Abstract: The surface of a typical Greek (Thassian) dolomitic marble was studied after interaction with U- and Th-containing aqueous solutions (1000mg/L, free-drift experiments for 1week at atmospheric ), using 12C-RBS and Laser μ-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 (μm-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. [Copyright &y& Elsevier]
Copyright of Nuclear Instruments & Methods in Physics Research Section B is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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DbLabel: Engineering Source
An: 32503526
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PubType: Academic Journal
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  Data: Spectroscopic characterization of Greek dolomitic marble surface interacted with uranium and thorium in aqueous solutions
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  Data: <searchLink fieldCode="AR" term="%22Godelitsas%2C+A%2E%22">Godelitsas, A.</searchLink><relatesTo>1</relatesTo><i> agodel@geol.uoa.gr</i><br /><searchLink fieldCode="AR" term="%22Kokkoris%2C+M%2E%22">Kokkoris, M.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Chatzitheodoridis%2C+E%2E%22">Chatzitheodoridis, E.</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Misaelides%2C+P%2E%22">Misaelides, P.</searchLink><relatesTo>4</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Nuclear+Instruments+%26+Methods+in+Physics+Research+Section+B%22">Nuclear Instruments & Methods in Physics Research Section B</searchLink>. May2008, Vol. 266 Issue 10, p2363-2366. 4p.
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  Data: <searchLink fieldCode="DE" term="%22Spectrum+analysis%22">Spectrum analysis</searchLink><br /><searchLink fieldCode="DE" term="%22Marble%22">Marble</searchLink><br /><searchLink fieldCode="DE" term="%22Uranium%22">Uranium</searchLink><br /><searchLink fieldCode="DE" term="%22Thorium%22">Thorium</searchLink>
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  Data: Abstract: The surface of a typical Greek (Thassian) dolomitic marble was studied after interaction with U- and Th-containing aqueous solutions (1000mg/L, free-drift experiments for 1week at atmospheric ), using 12C-RBS and Laser μ-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 (μm-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. [Copyright &y& Elsevier]
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  Data: <i>Copyright of Nuclear Instruments & Methods in Physics Research Section B is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1016/j.nimb.2008.03.073
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        Text: English
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        StartPage: 2363
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        Type: general
      – SubjectFull: Marble
        Type: general
      – SubjectFull: Uranium
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      – SubjectFull: Thorium
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              Text: May2008
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