Iron removal from waterlogged wood: Extraction by electrophoresis and chemical treatments

Autor: Gilles Baron, Sylvie Labroche, Elodie Guilminot, Charlène Pelé, Gwenaël Lemoine
Rok vydání: 2013
Předmět:
Zdroj: Studies in Conservation. 60:155-171
ISSN: 2047-0584
0039-3630
DOI: 10.1179/2047058413y.0000000110
Popis: The presence of iron oxides (lepidocrocite, goethite) in archeological wood may result in a degradation of the wood matrix. Extraction of these iron oxides is largely dependent on their solubility. In this study, balsa wood samples were impregnated with iron oxides to test extraction treatments. Additionally, archeological wood samples were also examined to determine treatment efficiency. Electrophoresis and simple immersion treatments were performed using various chemical solutions: a neutral and a conductive substance (potassium nitrate), an acid (acetic acid), three alkaline chelating agents (tri-ammonium and tri-sodium citrate and sodium oxalate), three acidic and slightly acidic chelating agents (ethylenediaminetetraacetic acid (EDTA), citric acid, and oxalic acid), and a reductant (sodium dithionite). Potassium nitrate did not extract sufficient amounts of iron, irrespective of whether the treatment was conducted by electrophoresis or simple immersion; any observable dissolution was attribut...
Databáze: OpenAIRE
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