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拉曼光谱是迅速发展起来的物理谱学分析技术,它是对物质结构的分子特征的测量,不同物种由于分子基团不同,结构不同,其拉曼谱特征不同。据此可以获取有用信息,达到测量、鉴定的目的。拉曼光谱仪的应用特点是适用于任意形状的样品:无损、快速、准确;用共焦显微拉曼不仅可以进行微区原位分析,还可以对样品表面下的微小包体测量。本文报道了对云南祖母绿中包体的测量,结果表明包裹体是锐钛矿型的TiO2,而不是以往通过化学成份、晶体形态分析所认为的金红石。
Raman spectroscopy is a rapid development of physical spectroscopy, which is a measure of the molecular characteristics of the material structure. Different species have different Raman spectra due to different molecular groups and different structures. According to this can obtain useful information to achieve the purpose of measurement, identification. The application of Raman spectroscopy is suitable for samples of arbitrary shape: nondestructive, rapid and accurate; with confocal microscopy, Raman spectroscopy can not only perform micro-zone in situ analysis, but also measure tiny inclusions under the surface of the sample. In this paper, the measurement of inclusions in emerald of Yunnan Province is reported. The results show that the inclusions are anatase TiO2 rather than rutile, which was previously considered by chemical composition and crystal morphology analysis.