黑色墨迹的拉曼光谱分析

Examination of black ink marks by raman spectrometer

目的对常见的黑色墨迹进行初步筛选,为墨迹的进一步检验提供依据。方法依据黑色墨迹的同色异谱特征,利用显微共焦激光拉曼光谱仪对19种黑色墨迹进行分析检验。结果根据不同墨迹的拉曼谱图,19种黑色墨迹可以分为3大类,即:未检出拉曼峰的墨迹,只检出碳物质的墨迹,以及主体色料为染料的墨迹。结论拉曼光谱可用于区分不同种类黑色墨迹,从而为选择合适的方法对黑色墨迹进一步进行检验奠定基础。

Objective Through initial screening of common black ink mark, provide the basis for further examination. Methods 19 kinds of black ink mark were analyzed using confocal miscroscopic laser Raman Spectrometer. Results Accord- ing to the Raman spectra, 19 kinds of black ink were divided into three categories, that is no Raman peak black ink, carbon-contai- ning black ink and dye-containing black ink . Conclusions Raman Spectrometer can be used to distinguish different kinds of black ink, which is useful for choosing suitable method to further examination.