Identification of Different Copper Green Pigments in Renaissance Paintings by Cluster-TOF-SIMS Imaging Analysis |
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| Authors: | Pascale Richardin Vincent Mazel Philippe Walter Olivier Laprévote Alain Brunelle |
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| Affiliation: | 1.Laboratoire du Centre de Recherche et de Restauration des Musées de France (LC2RMF),Paris,France;2.Laboratoire Matériaux et Santé, EA 401, Faculté de Pharmacie de Chatenay-Malabry,Université de Paris-Sud,Chatenay-Malabry,France;3.Chimie Toxicologie Analytique et Cellulaire, EA4463, Faculté des Sciences Pharmaceutiques et Biologiques,Université Paris Descartes,Paris,France;4.Centre de Recherche de Gif,Institut de Chimie des Substances Naturelles, CNRS,Gif-sur-Yvette,France |
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| Abstract: | Time-of-flight secondary ion mass spectrometry (TOF-SIMS) imaging using cluster primary ion beams is used for the identification of a green painting layer on the scene The Angels Concert from the Issenheim Altarpiece (painted in 1516) from a German Renaissance painter, Matthias Grünewald. Copper carboxylate clusters inside a basic copper chloride (atacamite) layer have been identified and located in the copper green layer. The mechanisms of transformation of atacamite into copper carboxylates may be initiated by an aging of the paint layers. The combination of the high mass resolution of the technique together with a micrometer spatial resolution and the possibility to simultaneously identify both minerals and organics, has proven to be the method of choice for the study of the stratigraphy of a paint cross-section. |
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