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.
作者
崔强
张亚旭
水碧纹
于宗仁
樊再轩
善忠伟
成小林
苏伯民
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)
出处
《文物保护与考古科学》
北大核心
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。
关键词
大佛湾
绿色颜料
巴黎绿
氯砷钠铜石
Big Buddha Bay
Green pigment
Emerald green
Lavendulan