研磨对文石红外光谱的影响  

EFFECT OF GRINDING ON IR SPECTRA OF ARAGONITE

作　　者：张刚生[1] 丁世磊[1] 

机构地区：[1]广西大学化学化工学院,广西南宁530004

出　　处：《矿产与地质》2005年第4期429-431,共3页Mineral Resources and Geology

基　　金：广西教育厅科研基金资助。项目编号:200420-6

摘　　要：系统测试了研磨后溶洞文石和乌贼骨文石的FT IR光谱,首次发现文石晶体中CO32-基团的2ν(面外弯曲振动)和3ν(反对称伸缩)频率与研磨强度密切相关,随研磨强度增加,其最大频移值分别可达5.5cm-1和11.7cm-1,而对称伸缩振动1ν和面内弯曲振动4ν基本不存在频移现象。The FTIR spectra of cuttlebone and speleothem aragonites ground for different periods of time were systematically collected. It was firstly found that the infrared frequencies of internal vibration modes of CO3^2- in aragonite had close relationships with grinding intensities. With the increase of grinding intensities, the maximal frequency shifts of vz（out-of-plane bending） and v3（asymmetric stretching） of CO3^-2 were observed up to 55cm^-1 and 11.7cm^-1 respectively. CO3^-2 showed little frequency shifts.

关 键 词：文石 FTIR光谱 研磨 频移 

分 类 号：P578.61[天文地球—矿物学] O657.33[天文地球—地质学]