云冈石窟石雕表面降尘中金属元素分析

Analysis of the Metal Element in the Dustfall of the Stone Carving's Surface in the Yungang Grottoes

用x射线荧光分析法(PIXE)和电感耦合等离子体发射光谱法(ICP)对云冈石窟表面降尘中的金属元素进行了定性和定量测定.结果表明,降尘中含有Cu,Pb,Sr,Al,Zn,Ca,Fe,Ni,Ti,K等金属元素.其中Al,Ca,Fe的含量偏高.高含量的Fe元素的存在,对云冈石窟的风化起着催化作用.

The metal elements in the dustfall of the stone carving's surface in the Yungang Grottoes were tested and analyzed by means of PIXE and ICP methods. The results show that there are some elemens in the dustfall,such as Ca,Pb,Sr,Al,Zn,Cu,Fe,Ni, Ti,K etc. ,among them the Al,Ca,Fe content are higher, and the higher Fe content acts a catalytic role to the weathering of the Yungang Grottoes.