期刊
ARCHAEOMETRY
卷 65, 期 3, 页码 617-634出版社
WILEY
DOI: 10.1111/arcm.12836
关键词
cinnabar; conservation treatment; cotton fiber; malachite; spectroscopy; tempera
The aim of this investigation was to analyze the materials and techniques of the 16th-century paintings in St Mary's Church, evaluate their deterioration, and propose a suitable conservation treatment. Various scientific analysis methods were used to examine the ground, pigments, binders, and plasters, resulting in data about the materials used and previous restoration works.
The aim of this investigation was to analyze the materials and techniques of the paintings in the 16th-century ce St Mary's Church, to evaluate deterioration of the paintings, and to propose a suitable conservation treatment for their preservation. The material analysis of ground, pigments, binders, and plasters was undertaken using binocular microscopy, field emission scanning electron microscopy (SEM)-energy dispersive X-ray spectroscopy, X-ray fluorescence, Fourier transform infrared spectroscopy in reflectance (KBr) and transmittance mode (attenuated total reflection), thin-film X-ray diffraction, and micro-Raman spectroscopy. Gas chromatography-mass spectrometry (GC-MS) was used for identifying proteinaceous and lipidic materials extracted from the micro-samples. The study generated data on two different red and green pigments used as decorative materials. The red pigments were identified as cinnabar along with traces of hematite and clay minerals, and green as malachite and the minor presence of other minerals. SEM analysis identified cotton fiber embedded in the coarse plaster layer that provided better strength to the plaster. Plant oils and proteins found as the binder in the pigment samples suggested that the painting technique was executed as tempera. Lead white and gypsum materials were used in previous restoration works.
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