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Insights into electrolytic stabilization with weak polarization as treatment for archaeological copper objects
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Adriaens, A. (Annemie), Dowsett, M. G., Leyssens, Karen and Van Gasse, Bjorn (2007) Insights into electrolytic stabilization with weak polarization as treatment for archaeological copper objects. Analytical and Bioanalytical Chemistry, Vol.387 (No.3). pp. 861-868. doi:10.1007/s00216-006-0835-1 ISSN 1618-2642.
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Official URL: http://dx.doi.org/10.1007/s00216-006-0835-1
Abstract
Immersion of corroded copper artefacts in dilute sodium sesquicarbonate solution is a well-recognized stabilization technique-especially in the conservation of objects recovered from marine environments and therefore saturated with chlorides. Here we describe three linked experiments performed to investigate a variation on this treatment, involving the application of a low potential to the artefact in order to drive the chloride extraction process. This includes a new spectroelectrochemical approach which allows 2-D pseudorandom X-ray reflection diffraction patterns to be obtained without interrupting the reaction in solution. Experiments were carried out on synthetically produced chloride layers on copper (nantokite and atacamite). We show that a thick chloride layer is, in general, replaced by a thin cuprite layer through a mechanism which involves detachment of the chloride crystallites from the surface prior to dissolution.
Item Type: | Journal Article | ||||
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Subjects: | Q Science > QD Chemistry | ||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
Journal or Publication Title: | Analytical and Bioanalytical Chemistry | ||||
Publisher: | Springer | ||||
ISSN: | 1618-2642 | ||||
Official Date: | February 2007 | ||||
Dates: |
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Volume: | Vol.387 | ||||
Number: | No.3 | ||||
Number of Pages: | 8 | ||||
Page Range: | pp. 861-868 | ||||
DOI: | 10.1007/s00216-006-0835-1 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access |
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