6533b7d0fe1ef96bd125b057

RESEARCH PRODUCT

Application of Modified Tafel Analysis to the Identification of Corrosion Products on Archaeological Metals Using Voltammetry of Microparticles

Antonio DoménechMaría Del Carmen BouzasMaría Teresa Doménech-carbóTrinidad Pasíes

subject

Archaeological leadmedia_common.quotation_subjectVoltammetry of microparticlesPINTURAElectrochemistryNon-invasive analysisArtCorrosion productsHoardArchaeologyAnalytical Chemistrymedia_common

description

Voltammetry of microparticles is applied to the identification of lead corrosion products by means of an essentially non-invasive 'one-touch' technique based on the use of graphite pencil. This methodology permits the mechanical attachment of few nanograms of sample from the surface of lead archaeological artefacts to a paraffin-impregnated graphite electrode, which, upon immersion in aqueous electrolytes, provides distinctive voltammetric responses for litharge and cotunnite- anglesite-, cerusite-based corrosion products. The reported method is applied to the identification of corrosion products in archaeological lead pieces from different Iberian sites in Valencia (Spain). © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

yearjournalcountryeditionlanguage
2011-11-29
10.1002/elan.201100577https://doi.org/10.1002/elan.201100577