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Abstract:

The Andean church of Our Lady of Copacabana de Andamarca in Bolivia was built in 1723. Its walls are made of adobe bricks and are decorated with paintings dated from mid 18th century. Before a restoration process involving the governments of Bolivia and the Federal Republic of Germany, seven microsamples were extracted from representative colors of one of the wall paintings inside the church. The aim of our research was to characterize the chromatic palette and investigate the painting technique of this Andean colonial wall painting. To approach these goals, an integrated investigation comprising Raman and FTIR-ATR spectroscopy, optical microscopy (OM), scanning electron microscopy with X-ray microanalysis (SEM-EDS), gas chromatography (GC), and gas chromatography mass spectrometry (GC-MS) was carried out.The results indicated the use of a mixture of two basic copper sulfates of mineral origin, brochantite and antlerite, as the green pigment, adding relevant information to the palette of green pigments in colonial art. Yellow, orange and red ochre, abundant pigments in the Andean region, were also characterized. Observation by optical microscopy of cross-sections of the embedded microsamples and analysis of organic binders by GC and GC-MS pointed to a secco technique and the use of a mixture of egg and vegetable oil ("tempera grassa") as the pigment binder.In conclusion, our results allowed to establish the pigment palette and offered new insights into the painting technique of Andean wall paintings. © 2016 .

Registro:

Documento: Artículo
Título:A multi-analytical investigation of the materials and painting technique of a wall painting from the church of Copacabana de Andamarca (Bolivia)
Autor:Tomasini, E.; Rodríguez, D.C.; Gómez, B.A.; de Faria, D.L.A.; Landa, C.R.; Siracusano, G.; Maier, M.S.
Filiación:UMYMFOR-CONICET and Departamento de Química Orgánica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires Ciudad Universitaria (C1428EGA), Pabellón 2, Ciudad Autónoma de Buenos Aires, Argentina
CONICET, Godoy Cruz 2290 (C1425FQB), Ciudad Autónoma de Buenos Aires, Argentina
Institute of Chemistry, University of São Paulo, Av. Prof. Lineu Prestes 748, Butantã São Paulo (SP), 05508-000, Brazil
Ministerio de Culturas y Turismo, Taller de Conservación y Restauración del Patrimonio Mueble, La Paz, Bolivia
Centro de Investigación en Arte, Materia y Cultura (IIAC, Universidad Nacional de Tres de Febrero), Avda. Antártida Argentina 1355 (C1104ACA), Ciudad Autónoma de Buenos Aires, Argentina
Palabras clave:Brochantite; Colonial art; Gas chromatography-mass spectrometry; Raman and IR spectroscopy; SEM-EDS; Wall painting
Año:2016
Volumen:128
Página de inicio:172
Página de fin:180
DOI: http://dx.doi.org/10.1016/j.microc.2016.04.020
Título revista:Microchemical Journal
Título revista abreviado:Microchem. J.
ISSN:0026265X
CODEN:MICJA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0026265X_v128_n_p172_Tomasini

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Citas:

---------- APA ----------
Tomasini, E., Rodríguez, D.C., Gómez, B.A., de Faria, D.L.A., Landa, C.R., Siracusano, G. & Maier, M.S. (2016) . A multi-analytical investigation of the materials and painting technique of a wall painting from the church of Copacabana de Andamarca (Bolivia). Microchemical Journal, 128, 172-180.
http://dx.doi.org/10.1016/j.microc.2016.04.020
---------- CHICAGO ----------
Tomasini, E., Rodríguez, D.C., Gómez, B.A., de Faria, D.L.A., Landa, C.R., Siracusano, G., et al. "A multi-analytical investigation of the materials and painting technique of a wall painting from the church of Copacabana de Andamarca (Bolivia)" . Microchemical Journal 128 (2016) : 172-180.
http://dx.doi.org/10.1016/j.microc.2016.04.020
---------- MLA ----------
Tomasini, E., Rodríguez, D.C., Gómez, B.A., de Faria, D.L.A., Landa, C.R., Siracusano, G., et al. "A multi-analytical investigation of the materials and painting technique of a wall painting from the church of Copacabana de Andamarca (Bolivia)" . Microchemical Journal, vol. 128, 2016, pp. 172-180.
http://dx.doi.org/10.1016/j.microc.2016.04.020
---------- VANCOUVER ----------
Tomasini, E., Rodríguez, D.C., Gómez, B.A., de Faria, D.L.A., Landa, C.R., Siracusano, G., et al. A multi-analytical investigation of the materials and painting technique of a wall painting from the church of Copacabana de Andamarca (Bolivia). Microchem. J. 2016;128:172-180.
http://dx.doi.org/10.1016/j.microc.2016.04.020