裂解气相色谱法分析蓝色中性笔字迹的书写墨水种类及墨迹随书写时间的变化规律

发布时间：2018-04-05 12:49

本文选题：裂解气相色谱　切入点：蓝色中性笔　出处：《色谱》2007年05期

【摘要】：中性笔是当前比较流行的一种书写工具,其墨水多采用颜料作为色料成分,很难用水和有机溶剂进行提取,故无法利用分析圆珠笔油墨和水性笔墨水所采用的气相色谱或高效液相色谱等方法进行检验。目前在法庭科学领域内还没有一种有效的方法用于分析中性笔字迹的书写墨水。采用裂解气相色谱法分析了蓝色中性笔字迹的书写墨水,根据色谱峰的个数和保留时间将收集的65个样品分成3类,其中大部分样品属于具有铜酞菁颜料主要色谱峰的第二大类。色谱峰的保留时间和峰面积比值的分析结果表明所建立的分析方法重现性好且稳定。在此基础上,对蓝色中性笔墨迹随书写时间的变化规律进行了初步研究,得出了老化曲线。
[Abstract]:Neutral pen is one of the most popular writing tools at present. The ink of neutral pen is mostly made of pigment, so it is difficult to extract it with water and organic solvent.Therefore, gas chromatography or high performance liquid chromatography can not be used to analyze ballpoint pen ink and waterborne pen ink.At present, there is no effective method in forensic science to analyze the writing ink of neutral pen.The ink of blue neutral handwriting was analyzed by pyrolysis gas chromatography. The 65 samples were divided into three categories according to the number of chromatographic peaks and retention time.Most of the samples belong to the second largest category with the main chromatographic peaks of copper phthalocyanine pigments.The analysis results of retention time and peak area ratio of chromatographic peak show that the established analytical method has good reproducibility and stability.On this basis, the variation law of blue neutral ink mark with writing time was studied, and the aging curve was obtained.
【作者单位】：东北师范大学化学学院中国人民公安大学中国刑事警察学院法医系法化专业中国刑事警察学院法医系法化专业中国刑事警察学院法医系法化专业中国刑事警察学院法医系法化专业中国刑事警察学院法医系法化专业
【基金】：国家高技术产业发展项目(No20012492) 公安部重点课题资助项目(No200119300007)
【分类号】：D918.2

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