“El gran dia de Girona”, la restauració d’una obra de gran format

La singularitat del procés de conservació-restauració del quadre “El gran dia de Girona”, de Ramon Martí Alsina, rau en l’excepcionalitat de les dimensions de l’obra, però també en què constitueix un referent quant a l’aplicació de criteris molt poc intervencionistes en una pintura d’aquesta envergadura. Aquests han permès preservar les característiques originals del suport malgrat els dos grans estrips que travessaven pràcticament la totalitat de la tela, i respectar l’originalitat de la tècnica pictòrica de l’artista durant un procés tan complex com la neteja de la policromia

El ciclododecà i les seves aplicacions en conservació-restauració

L’ús de nous productes en conservació-restauració comporta una adquisició constant de coneixements sobre les seves característiques i resultats. Aquest article pretén donar a conèixer les propietats i les possibilitats d’utilització del ciclododecà (CCD) –emprat a Alemanya des de mitjans de la dècada dels noranta–, un fixatiu i consolidant temporal volàtil aplicable en tractaments de diverses especialitats.  

Caracterización de materiales de embalaje y protección de Bienes Culturales por uFTIR y SEM y determinación cromatográfica de COVs en los materiales y espacios destinados a la conservación de Patrimonio.

There is a growing concern in the field of conservation of cultural heritage to prevent and avoid potential damage on cultural property that is part of the collection of a museum. This property can be either directly exhibited, or stored in the museum’s reserves. Among several actions that can be taken to minimize the risks, the study of both the materials used for protection and packaging of cultural property and of the spaces intended for its exhibition and storage are fundamental. The objectives of this study are the characterization and determination of volatile organic compounds (VOCs) in 17 materials used for protection and packaging of Cultural Property, and the determination of VOCs in the air of two spaces intended for the exhibition and storage of Cultural Property. The 17 materials have been characterized by Fourier transform infrared microspectroscopy (FTIRM) and Scanning Electron Microscopy (SEM) techniques. Determination of VOCs has been carried out by headspace coupled to gas chromatography with detection by flame ionization and mass spectrometry (HS-GC-FID/MS). Gases emitted from the materials when heated for 5 h at 120 °C are studied by these techniques. The procedure followed is based on the Volkswagen PV 3341 test method. Determination of VOCs in spaces intended for the exhibition and storage of cultural property has been carried out by HS-GC-MS and GC-MS. VOCs are captured in passive samplers with different kinds of carbon as adsorbent material and are kept in contact with air for 27 days. Adsorbed compounds are desorbed with dimethylacetamide (DMA), and the resulting liquid extract is analyzed by HS-GC-MS and by direct injection in GC-MS to ensure detection of a wide range of volatilities. Application of these chromatographic methods to the samples of materials has allowed to calculate the amount of VOCs emitted by the 17 materials and to identify 23 different compounds. In the other hand, analysis of the passive samplers has allowed to identify 75 different compounds in the two sampling zones.Peer ReviewedPostprint (published version