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Artículo

Characterization of pigments and binders in a mural painting from the Andean church of San Andrés de Pachama (northernmost of Chile)

Tomasini, Eugenia PaulaIcon ; Peña Cárcamo, José RafaelIcon ; Castellanos Rodriguez, Diana MarcelaIcon ; Careaga Quiroga, Valeria PilarIcon ; Gutiérrez, Sebastian; Rúa Landa, Carlos; Sepúlveda, Marcela; Guzman, Fernando; Pereira, Magdalena; Siracusano, Gabriela SilvanaIcon ; Maier, Marta SilviaIcon
Fecha de publicación: 01/12/2018
Editorial: Springer
Revista: Heritage Science
ISSN: 2050-7445
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Química Analítica

Resumen

The Andean church of San Andrés de Pachama is located in the highland of the northernmost of Chile, near the limit with Bolivia and next to the Ruta de la Plata. This commercial route contributed in the past to the transport and commerce of various raw materials, such as silver, from the Andean mountains region to the Pacific Ocean coast and then to the European market. The walls inside the church are decorated with paintings from the end of the eighteenth century that reproduce religious motivs together with flowers, fruits, and birds. In this study, micro samples taken from one of the mural paintings have been analysed to acquire information on the artistic materials and the painting technique previous to the restoration of the paintings. Analysis by micro-Raman spectroscopy complemented with scanning electron microscopy–energy dispersive X-ray spectroscopy, attenuated total reflection infrared spectroscopy, X-ray diffraction, and high-performance liquid chromatography with diode-array detection allowed the identification of orpiment, vermilion, indigo, smalt, antlerite, hematite, carmine lake, and wood charcoal as pigments as well as gypsum as the ground layer. Lipidic and proteinaceous materials extracted from the microsamples were identified by gas chromatography coupled to mass spectrometry and indicated the use of a mixture of egg and siccative oil as binders and a secco painting technique involving animal glue as the plaster primer. Smalt and the prized cochineal lake are reported for the first time in an Andean colonial mural painting.
Palabras clave: ANTLERITE , CARMINIC ACID , EGG , GC–MS , MICRO-RAMAN SPECTROSCOPY , SEM–EDS
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution 2.5 Unported (CC BY 2.5)
Identificadores
URI: http://hdl.handle.net/11336/87463
DOI: https://doi.org/10.1186/s40494-018-0226-x
URL: https://heritagesciencejournal.springeropen.com/articles/10.1186/s40494-018-0226
Colecciones
Articulos(INQUIMAE)
Articulos de INST.D/QUIM FIS D/L MATERIALES MEDIOAMB Y ENERGIA
Articulos(SEDE CENTRAL)
Articulos de SEDE CENTRAL
Articulos(UMYMFOR)
Articulos de UNID.MICROANAL.Y MET.FISICOS EN QUIM.ORG.(I)
Citación
Tomasini, Eugenia Paula; Peña Cárcamo, José Rafael; Castellanos Rodriguez, Diana Marcela; Careaga Quiroga, Valeria Pilar; Gutiérrez, Sebastian; et al.; Characterization of pigments and binders in a mural painting from the Andean church of San Andrés de Pachama (northernmost of Chile); Springer; Heritage Science; 6; 1; 1-12-2018; 1-12
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