Department of Chemistry & Biochemistry, University of Delaware, Newark, DE 19716, USA.
School of Architecture, Tsinghua University, Beijing 100084, China.
Molecules. 2021 Jan 7;26(2):266. doi: 10.3390/molecules26020266.
During conservation of the painted ceiling decoration of Lin'xi Pavilion in the Forbidden City, two distinct paint campaigns were isolated as a unique case study into architectural paint materials during both the Ming and Qing dynasties. Paint samples and cross sections from both paint generations were analyzed with SEM-EDX, time of flight-secondary ion mass spectrometry (ToF-SIMS), XRD, FTIR, and Raman spectroscopies. Similar organic and inorganic materials characteristic of these time periods were identified. The pigments of interest found in both paint generations were botallackite and atacamite polymorphs. This suggests a shift from natural mineral sources to synthetic copper-based pigments for these larger architectural projects.
在故宫临溪亭彩绘天花板的保护过程中，两个截然不同的油漆阶段被隔离出来，作为明清两代建筑油漆材料的独特案例研究。使用扫描电子显微镜-能量色散 X 射线能谱仪（SEM-EDX）、飞行时间二次离子质谱（ToF-SIMS）、X 射线衍射（XRD）、傅里叶变换红外（FTIR）和拉曼光谱对两代油漆的样品和切片进行了分析。鉴定出了与这些时期特征相符的相似有机和无机材料。在两代油漆中都发现了感兴趣的颜料，即蓝铜矿和氯铜矿多晶型物。这表明在这些大型建筑项目中，颜料的来源从天然矿物转向了合成的铜基颜料。
