南京市麒麟镇麒麟石刻风化壳的表征  

CHARACTERIZATION OF WEATHERING CRUSTS ON KYLIN INSCRIPTION,KYLIN COUNTRYSIDE, NANJING

作　　者：徐飞高[1,2] 汤剑[1] 高士祥[1] 

机构地区：[1]污染控制与资源化研究国家重点实验室南京大学环境学院,南京210093 [2]南昌大学理学院,南昌330047

出　　处：《环境化学》2008年第2期251-255,共5页Environmental Chemistry

基　　金：江苏省社会发展项目资助课题(BS2006050)

摘　　要：以南京市麒麟镇麒麟石刻作为研究对象,运用XRD,XRF,IR,IC,ICP和SEM-EDS等分析手段对石刻新鲜岩样和风化壳进行表征.结果表明:麒麟石刻不同部位的风化壳成分差别很大,有大气中污染气体和其它外来物质进入到风化壳成分当中;对比研究发现,新鲜岩样风化后,其方解石晶体C—O键特征吸收峰出现约8cm-1的蓝移现象,且明显窄化.新鲜岩风化后,表面变的粗糙,质地松散.风化壳中可溶盐含量最高的是硫酸盐,表明大气中的SO2在风化过程中起重要作用.Crusts and original rock from Kylin inscription, Kylin countryside, Nanjing were studied, Tne samples were characterized by XRD, XRF, IR, IC, ICP, and SEM-EDS techniques. The results revealed that the stone inscriptions belong to limestone, and polluted gas and exotic materials from the atmosphere could be combinaed into the crusts in which the compositions showed significant difference from different parts of Kylin inscription. The infrared absorption peaks of C--O bond of calcite crystal in crusts shifted to a higher frequency by 8 cm^-1 compared with that of calcite crystal in original rock. Surface of the rock became coarse and loose after weathering. The fact that sulphate was the most abundant of soluble salts in crusts indicated that SO2 in the atmosphere played important roles in the process of weathering.

关 键 词：麒麟石刻 风化壳 方解石晶体 

分 类 号：X503.5[环境科学与工程—环境工程]