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Instruments / Technical Area	Publication Details	Published	Actions
B18-Core EXAFS	Strontium carbonate nanoparticles for the surface treatment of problematic sulfur and iron in waterlogged archaeological wood Eleanor Schofield , Ritimukta Sarangi , Apurva Mehta , Mark Jones , Andrew Smith , Fred Mosselmans , Alan Chadwick Journal Of Cultural Heritage DOI: 10.1016/j.culher.2015.07.013 Diamond Proposal Number(s): [6437] Show Abstract ▼ 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.	Aug 2015

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B18-Core EXAFS

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

Eleanor Schofield , Ritimukta Sarangi , Apurva Mehta , Mark Jones , Andrew Smith , Fred Mosselmans , Alan Chadwick

Journal Of Cultural Heritage

DOI: 10.1016/j.culher.2015.07.013

Diamond Proposal Number(s): [6437]

Show Abstract ▼

Aug 2015