6533b7d1fe1ef96bd125c343
RESEARCH PRODUCT
Layer-by-layer identification of copper alteration products in metallic works of art using the voltammetry of microparticles.
Antonio DoménechMaría Teresa Doménech-carbóIsabel Martínez-lázarosubject
Working electrodeChemistryLayer by layerAnalytical chemistrychemistry.chemical_elementSquare waveElectrochemistryBiochemistryCopperAnalytical ChemistryCorrosionBrassChemical engineeringvisual_artvisual_art.visual_art_mediumEnvironmental ChemistryVoltammetrySpectroscopydescription
An in situ technique for layer-by-layer electrochemical analysis of solid surfaces using the voltammetry of microparticles is presented. The method is based on the determination of several shape-dependent parameters for voltammetric curves recorded at a graphite pencil working electrode in contact with the sample, all immersed into aqueous electrolytes. Repetitive square wave voltammetry and sequential application of constant potential reductive steps and voltammetric scans yield discernible responses for the corrosion products distributed in stratified layers on metal-based surfaces. This methodology is applied to identify alteration products of copper and copper alloys distributed in different layers in copper coupons submitted to different corrosive treatments and a contemporary brass sculpture.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2010-06-27 | Analytica chimica acta |