黑色签字笔墨水的NIR FT-Raman光谱法研究

本文首次采用近红外傅里叶变换位曼（NIR FT-Raman）光谱技术测定了36种黑色签字笔墨迹的拉曼谱。据拉曼的基团振动峰可将36种签字笔墨迹分为10大类,并对它们的谱图进行了分析。同时考察了基体（书写所用的纸张）、湿度、样品的测定功率以及书写时间对谱图的影响,尤其是第四项显示了与相对书写时间的关系。该方法快速、简便、灵敏度高、不需对样品进行分离提取。

Studies of Black Roller Pen Inks by NIR FT-Raman Spectrometry

kinds of black roller pen inks collected from Chinese market were analyzed by NIR FT Raman spectroscopic technique and they were divided into 10 groups (from A to J group) according to their characteristic Raman spectra.Based on studying main component of roller pen inks and peculiarity of Raman spectrum by documents,the main Raman peaks of each group of roller ball inks were interpreted particularly.It have also been investigated that the influence factors from paper matrix,humidity of the samples,laser power and writing time,especially the forth item showed some relationships of the peak intensity ratio with the relative age of inks.This method is speediness,convenience,high sensitivity and no ink extraction process.The insufficiency of the method is that fluorescence and heat background comes forth when a few samples were irradiated by laser.