故宫养心殿佛塔鎏金铜钉涂层成分分析  

Analysis of Coating Components of Gilt Brass Nails in the Hall of Mental Cultivation(Yangxin Hall)of the Palace Museum

作　　者：魏乐 金高娃[2,3] 丁俊杰 郭志谋 WEI Le;JIN Gao-Wa;DING Jun-Jie;GUO Zhi-Mou(Conservation Department,the Palace Museum,Beijing 100009,China;CAS Key Lab of Separation Science for Analytical Chemistry,Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian 116023,China;Ganjiang Chinese Medicine Innovation Center,Nanchang 330000,China)

机构地区：[1]故宫博物院文保科技部,北京100009 [2]中国科学院大连化学物理研究所.中国科学院分离分析化学重点实验室,大连116023 [3]赣江中药创新中心,南昌330000

出　　处：《分析化学》2022年第9期1407-1414,I0012-I0014,共11页Chinese Journal of Analytical Chemistry

基　　金：国家重点研发计划专项项目(No.2019YFC1520300);国家自然科学基金项目(No.22074141)资助。

摘　　要：在对故宫养心殿西暖阁佛堂佛塔进行修复清洗时,发现鎏金铜钉外涂有一层特殊黑红色材质。涂层材质经甲醇/酸提取,采用液相色谱-质谱(LC-MS)法进行检测分析,同时结合X射线荧光能谱仪、X射线衍射仪及显微红外光谱仪,对其成分及上染工艺进行分析。分析结果表明,无机矿物主要成分含有石膏、石英和碳酸钙,还检测到锈蚀产物氯铜矿、氯化亚铜及草酸钙,植物胶作为调和剂。LC-MS分析结果表明,该铜钉采用紫檀作为显色物质进行上色,这种上色技巧使铜钉外观与紫檀佛塔浑然天成。本研究为混合材质类文物的分析提供了参考。The gilt brass nail components embedded in the Buddhist pagoda were coated with a special layer of dark red material which was discovered during the protection and restoration process.After pre-treatments with methanol/acid extraction,liquid chromatography-mass spectrometry(LC-MS)in combination with energy dispersive X-ray fluorescence(EDXRF),X-ray powder diffraction(XRD)and micro-Fourier transform infrared(micro-FTIR)was applied to analysis of the composition and manufacturing process.The results showed that the black layer consisted of gypsum,quartz and calcite,as well as atacamite,nantokite and weddellite as corrosion products with plant gum as effect additive.Red sandalwood was applied as coloring matter for dyeing to echo the whole style of pagoda naturally.This study provided a new view for the analysis of mix-media cultural relics.

关 键 词：鎏金铜钉 液相色谱-质谱 紫檀 文物 

分 类 号：K876.4[历史地理—考古学及博物馆学] O657.63[历史地理—历史学]