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Strontium carbonate nanoparticles for the surface treatment of problematic sulfur and iron in waterlogged archaeological wood

Schofield, Eleanor J., Sarangi, Ritimukta, Mehta, Apurva, Jones, A. Mark, Smith, Andrew, Mosselmans, J. Frederick W., Chadwick, Alan V. (2015) Strontium carbonate nanoparticles for the surface treatment of problematic sulfur and iron in waterlogged archaeological wood. Journal of Cultural Heritage, 18 . pp. 306-312. ISSN 1296-2074. E-ISSN 1778-3674. (doi:10.1016/j.culher.2015.07.013) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided) (KAR id:60035)

The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided. (Contact us about this Publication)
Official URL
http://dx.doi.org/10.1016/j.culher.2015.07.013

Abstract

Stabilising waterlogged archaeological wooden artefacts for display presents a challenge for conservators and scientists. Sulfur compounds, incorporated into the wood prior to excavation, can lead to acid formation when exposed to oxygen, and in the presence of iron ions. Strontium carbonate nanoparticles have recently been shown to reduce the production of acid formation at the root by reacting with inorganic sulfur-containing compounds. Here, we show the feasibility of using this treatment on small samples where consolidating treatments have already been performed. It is found that PEG 200 does not prevent the reactivity of the nanoparticles with the sulfur compounds present in the artefacts. A surface brushing application method was found to be successful whilst retaining the visual integrity. In addition, it was found that this technique results in the leaching of iron from the surface layers, preventing future build up of acid catalysed by iron compounds.

Item Type: Article
DOI/Identification number: 10.1016/j.culher.2015.07.013
Divisions: Faculties > Sciences > School of Physical Sciences
Depositing User: Alan Chadwick
Date Deposited: 23 Jan 2017 15:13 UTC
Last Modified: 29 May 2019 18:35 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/60035 (The current URI for this page, for reference purposes)
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