光谱法在唐卡蓝、绿色颜料分析中的应用  

Application of Spectrometry on Analysis of Blue and Green Pigments in the Thangka

作　　者：张蕊[1] 方小济 巨建伟 ZHANG Rui;FANG Xiaoji;JU Jianwei(Palace Museum, Beijing, 100009)

机构地区：[1]故宫博物院,北京100009

出　　处：《光散射学报》2020年第3期280-287,共8页The Journal of Light Scattering

摘　　要：本研究以唐卡《威罗瓦金刚画像贴落》脱落的蓝色和绿色颜料样品为研究对象,利用三维视频显微镜、激光拉曼光谱、红外吸收光谱、X射线衍射光谱等方法开展形貌观察和成分分析。通过显微观察可了解颜料颜色、形貌、颗粒尺寸分布、杂质情况等信息;从多种光谱分析结果互相印证,可知蓝色颜料主要成分为蓝铜矿,绿色颜料主要成分为孔雀石,晶体结构较好。光谱学方法可为唐卡的保护修复和预防性保护工作中材料的选择和保护提供参考依据。The aim of this study was to analysize the blue and green pigment samples falling off from the Thangka Portrait of Vajrabhairava.3D video microscope was applied to observe the morphology,particle size distribution,impurity.Laser Raman spectrum,infrared absorption spectrum,X-ray diffraction spectrum were used to show the chemical composition and crystal structure.According to the mutual confirmation of various spectral analysis results,the main component of blue pigment was azurite,while the main component of green pigment was malachite with good crystal structure.The spectroscopic method can provide a reference basis for the selection and protection of materials with a view the protection,repair and preventive protection of Thangka.

关 键 词：唐卡 拉曼散射光谱 红外吸收光谱 X射线衍射光谱 

分 类 号：O657.3[理学—分析化学] K876.9[理学—化学]