摘要
土遗址表面泛白与保存环境湿度有委很大关系,在干燥的环境中保存的土遗址常发生表面泛白现象汉阳陵外藏坑展示厅是我国首个全封闭式的地下展厅,展厅内13号遗址坑内湿度(RH)常年100%,在这样高温的环境中遗址表面仍然泛白严重。为了说明汉阳陵土遗址表面泛白原因及白色物质来源,本工作利用XRF、FT-IR、XRD和离子色谱对13号坑遗址表面色样品元素组成、离子和物象组成进行了分析。结果表明,白色物质主要成分为石膏(CaSO_4·2H_2O)。
Surface whitening of earthen sites,a phenomenon often occurs in dry environments,is closely related to the humidity of the site.The Han Yang tomb underground exhibition hall is the first fully - enclosed exhibition hall in China.Although the exhibition hall of pit No.13 has a constant humidity of 100%,surface whitening is still heavy in this high humid site.To better understand the causes of whitening,and the sources of the white materials, X - ray fluorescence spectroscopy,Fourier transfer infrared spectroscopy,X - ray diffraction and ion chromatography were used to analyze the elements,ions and phases of surface white materials in pit No.13.The results of these studies show that the white material is mainly gypsum（CaSO_4 ？ 2H_2O）.The results of ion chromatography suggest that migration and enrichment of soluble salts in soil may be the cause of the whitening.
出处
《文物保护与考古科学》
2011年第4期59-63,共5页
Sciences of Conservation and Archaeology
关键词
汉阳陵
遗址
泛白
石膏
Han Yang tomb site
Earthen relies
Whitening
Gypsum
