利用共聚焦显微拉曼光谱技术,对玻璃片上的油脂指纹进行分析研究。根据其特征峰位置和数目将样品进行分类,并对特征峰所对应的分子振动基团进行指认。在此基础上,对玻璃片上的油脂指纹进行拉曼光谱成像,从而获得油脂指纹纹线物质在空间上的分布情况。实验结果表明,共聚焦显微拉曼光谱技术可以区分不同成分的指纹残留物,拉曼成像技术可以同时获得指纹的图像和物质成分,对于油脂指纹的提取和分析有广阔的应用前景。

Oil fingerprints residues on glass slides were examined by confocal Raman spectroscopy.The samples were divided into several groups according to the position and number of characteristic peaks.Meanwhile,corresponding molecular vibration groups were identified for each the characteristic peaks.On the basis of that,Raman imaging was also employed to study oil fingerprints residues on glass slides,so as to obtain the distribution of oil fingerprint ridge substance.The experimental results show that the confocal micro-Raman spectroscopy can be used to distinguish oil fingerprint residues with different components,while the Raman imaging technique can be used to obtain the image and the components of fingerprint simultaneously.It has broad application prospect for the extraction and analysis of oil fingerprint.