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Towards quantified assessment of aqueous chloride extraction methods for archaeological iron: De-oxygenated treatment environments

Watkinson, David and Al-Zahrani, Abdulnaser 2008. Towards quantified assessment of aqueous chloride extraction methods for archaeological iron: De-oxygenated treatment environments. The Conservator 31 (1) , pp. 75-86. 10.1080/01410096.2008.9995234

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Abstract

The advantages and disadvantages of treating objects by aqueous washing methods are discussed. Chloride bearing corrosion products on iron are related to aqueous chloride extraction treatments. Alkaline sulphite; de‐aerated sodium hydroxide; de‐aerated Soxhlet; de‐aerated water; sodium sulphite and aerated water washing methods are applied to archaeological iron, measured and quantitatively compared. De‐aerated alkali was the best and most predictable chloride extractor. This is attributed to prevention of corrosion during treatment and the action of hydroxyl as a counter ion.

Item Type: Article
Date Type: Publication
Status: Published
Schools: History, Archaeology and Religion
Publisher: Routledge
ISSN: 0140-0096
Last Modified: 04 Jun 2017 02:54
URI: http://orca.cf.ac.uk/id/eprint/13702

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