Freitas Renato P, Ribeiro Iohanna M, Calza Cristiane, Oliveira Ana L, Felix Valter S, Ferreira Douglas S, Pimenta André R, Pereira Ronaldo V, Pereira Marcelo O, Lopes Ricardo T
Laboratório de Instrumentação e Simulação Computacional, LISCOMP/IFRJ-CPAR, 26600-000 Paracambi, Brazil.
Laboratório de Instrumentação e Simulação Computacional, LISCOMP/IFRJ-CPAR, 26600-000 Paracambi, Brazil.
Spectrochim Acta A Mol Biomol Spectrosc. 2016 Feb 5;154:67-71. doi: 10.1016/j.saa.2015.10.013. Epub 2015 Oct 21.
In this study, samples were taken from the sculpture of Our Lady of Sorrows and analyzed by Raman spectroscopy and FT-IR. This sculpture has been dated to the early eighteenth century. Samples were also examined using optical microscopy and Energy Dispersive Spectroscopy (EDS). Based on chemical analysis, the pigments vermilion [HgS], massicot [PbO] and azurite [Cu3(CO3)2(OH)2]were found in the sculpture polychrome. The results indicate that the green polychrome of the sculpture's mantle comes from the blending of massicot and azurite. Because the literature reports that the mantle of the Our Lady of Sorrows sculpture is blue, the mixing of these pigments results from a production error. The results also indicate the presence of Au in the sculpture, which indicates the originality of the piece. The results from this study helped restorers to choose the appropriate procedures for intervening in the sculpture and contributed to the knowledge about the manufacturing process of Brazilian baroque sculptures.
在本研究中，从《悲伤圣母》雕塑上采集样本，并通过拉曼光谱和傅里叶变换红外光谱进行分析。该雕塑的年代可追溯到18世纪早期。样本还使用光学显微镜和能量色散光谱（EDS）进行了检查。基于化学分析，在雕塑的彩绘中发现了朱砂[HgS]、铅黄[PbO]和蓝铜矿[Cu3(CO3)2(OH)2]等颜料。结果表明，雕塑披风的绿色彩绘来自铅黄和蓝铜矿的混合。由于文献报道《悲伤圣母》雕塑的披风是蓝色的，这些颜料的混合是生产失误导致的。结果还表明雕塑中存在金，这表明该作品的原作性。本研究的结果帮助修复人员选择了干预雕塑的合适程序，并有助于了解巴西巴洛克雕塑的制作过程。
