重庆大足大佛湾彩绘绿色和蓝绿色颜料的分析研究  

Study of copper and arsenic-containing green and blue-green pigments of rock carvings at Big Buddha Bay in Dazu

作　　者：崔强[1,2] 张亚旭 水碧纹[1,2] 于宗仁[1,2] 樊再轩[1,2] 善忠伟 成小林 苏伯民[1,2] CUI Qiang;ZHANG Yaxu;SHUI Biwen;YU Zongren;FAN Zaixuan;SHAN Zhongwei;CHENG Xiaolin;SU Bomin(Conservation Institute of Dunhuang Academy, Jiuquan 736200, China;National Research Center for Conservation of Ancient Wall Paintings and Earthen Sites (Dunhuang Academy), Jiuquan 736200, China;Shaanxi Provincial Institute of Archaeology, Xi’an 710043, China;National Museum of China, Beijing 100006, China)

机构地区：[1]敦煌研究院保护研究所,甘肃酒泉736200 [2]国家古代壁画与土遗址保护工程技术研究中心(敦煌研究院),甘肃酒泉736200 [3]陕西省考古研究院,陕西西安710043 [4]国家博物馆,北京100006

出　　处：《文物保护与考古科学》2020年第6期87-94,共8页Sciences of Conservation and Archaeology

基　　金：国家自然科学基金资助(51962001);甘肃省科技重大专项计划项目资助(17JR7WA012);甘肃省文物保护科学和技术研究课题资助(GWJ201606);川渝石窟保护示范项目资助。

摘　　要：为了确定重庆大足大佛湾彩绘含铜、砷元素的绿色及蓝绿色颜料显色成分,应用便携式X射线荧光光谱仪(XRF)、便携式显微镜等无损调查方法,结合X射线衍射分析仪(XRD)、扫描电镜-能谱仪(SEM-EDX)、X射线光电子能谱分析仪(XPS)、显微拉曼光谱仪(RM)等分析方法,对取自大佛湾塑像的绿色及蓝绿色颜料进行调查和分析。结果表明绿色颜料显色成分为为巴黎绿[Cu(CH3COO)2·3Cu(AsO2)2],蓝绿色颜料显色成分为氯砷钠铜石[NaCaCu5(AsO4)4Cl·5H2O]。根据研究结论推断,氯砷钠铜石可能为巴黎绿的变色产物。该结果为探讨近代人工合成颜料变色机理提供了新的线索和方法。The chromogenic copper and arsenic-containing green and blue-green pigments of rock carvings at Big Buddha Bay in Dazu,Chongqing,were investigated and analyzed using portable X-ray fluorescence spectrometry(XRF),portable microscopy and other non-destructive analysis methods in combination with X-ray diffraction(XRD),scanning electron microscopy-energy dispersive X-ray spectrometry(SEM-EDX),X-ray photoelectron spectrometry(XPS)and micro Raman spectrometry(RM).The results show that the chromogenic component of the green pigment is emerald green[Cu(CH3COO)2·3Cu(AsO2)2],and that of blue-green pigment is lavendulan[NaCaCu5(AsO4)4Cl·5H2O].Also,it is inferred that lavendulan is a discoloration product of emerald green,based on this research.This work provides new clues to and methods for research on the chromogenic changes in modern synthetic pigments.

关 键 词：大佛湾 绿色颜料 巴黎绿 氯砷钠铜石 

分 类 号：K879.27[历史地理—考古学及博物馆学]