Non-invasive Approach In The Study Of Archaeological Excavation Site:Employment Of The Portable XRF To Investigate Cultural Relics

The X-ray fluorescence(XRF)technique has been widely used in many fields such as material analysis,geological and mineral survey,biomedicine,environmental monitoring due to its advantages of non-destructivity,non-pollution multielement and so on.This technique has been introduced to the field of cultural relics conservation as its continuous improvements.This study bases on the first platform named 'Cultural relics conservation mobile laboratory',which is developed independently for the archaeological excavation site by our country,portable XRF is employed to analysis and investigate the textures and diseases of the cultural relics in archaeological excavation site.Main research contents as follows:1.Non-destructive XRF laboratory simulation on cultural relics at archaeological sites.Before carrying out in situ non-destructive XRF analysis on cultural relics at archaeological sites,in order to optimize and understanding the portable X-ray fluorescence spectrometer,a series of systematic laboratory simulations have been undertaken with detected samples including rocks and minerals,simulative test panel of mural painting,as well as the low-level cultural relics in the collection of cultural institutions,aim of optimizing the instruments to the best of ability and initially understanding the test results of the instrument.2.In situ non-destructive XRF spectroscopy on cultural relics at archaeological sitesBy application of portable XRF spectrometer,cultural relics at archaeological sites in Shaanxi,Shanxi,Hubei,Zhejiang have been identified in situ non-destructively.The identified objects consist of bronzes,painted pottery,lacquer wares etc.3.In situ non-destructive Raman spectroscopy on Dunhuang Mural paintingsBy application of a variety of portable XRF spectrometers,wall paintings of Dunhuang dated from the Northern Wei Dynasty,the Western Wei Dynasty,the Tang Dynasty,the Five Dynasties,the Western Xia and the Yuan Dynasty have been investigated non-destructively,including the hues of eight kinds of color such as red,yellow,orange,blue,green,grey,brown and black.It has been well-proven that portable XRF analyzer fully meets with the requirement of culture for non-destructive,in-situ,rapid and multi-elements analysis simultaneously,etc,though the application of XL3T portable XRF analyzer by modeling test in the laboratory and non-invasive analysis in-situ at the site of archaeological excavation.In-situ,portable XRF analyzer not only could provide rapid analysis for different material quality of cultural relics and its attachment,but also useful analytical information for other non-destructive analyzer such as raman spectrometer.Portable energy dispersive X-ray fluorescence spectrometer is one of the indispensable analysis tools in the field of technological archaeology and cultural relic conservation,which has a bright future in the application of non-destructive analysis and detection of cultural relic.