| 蓝色圆珠笔字迹色痕FT-IR光谱经时变化的研究 |
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| 引用本文： | 王俭,孙素琴,张振宇,罗国安,王瑛玮,王彦吉. 蓝色圆珠笔字迹色痕FT-IR光谱经时变化的研究[J]. 刑事技术, 1999, 0(6) |
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| 作者姓名： | 王俭 孙素琴 张振宇 罗国安 王瑛玮 王彦吉 |
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| 作者单位： | 清华大学化学系 北京100084(王俭，孙素琴，张振宇，罗国安)，公安部物证鉴定中心 北京100084(王瑛玮)，中国刑警学院 沈阳110035(王彦吉) |
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| 摘 要： | 笔者曾用FT-IR光谱法对108种不同蓝色圆珠笔油墨进行了系统分析,确定了油墨组成成份,实现了种类认定.在此基础上,选取了二种不同种类的蓝色圆珠笔油墨字迹色痕,在紫外光下定时照射,根据各自光谱特征峰校正峰高的计算,确定相关峰的相对峰高比.根据相对峰高比值随时间变化的规律,进行了曲线拟合和计算机编程.同时,探讨了油墨组份之间随光照时间的变化,其目的是为了推断字迹色痕的“年龄”.
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| 关 键 词： | FT-IR光谱 无损分析 圆珠笔油墨 字迹年龄 |
A STUDY ON THE VARIATION OF BLUE BALLPOINT PEN INKS' FT -IR SPECTRA BY TIME |
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| Wang Jian,et al.. A STUDY ON THE VARIATION OF BLUE BALLPOINT PEN INKS' FT -IR SPECTRA BY TIME[J]. Forensic Science and Technology, 1999, 0(6) |
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| Authors: | Wang Jian et al. |
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| Affiliation: | Wang Jian,et al. Department of Chemistry,Tsinghua university,Beijing 100084 |
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| Abstract: | Total of 108 kinds of blue ballpoint pen inks were systematically analyzed by FT - IR microscope. The components of blue ballpoint pen inks were identified by analysis of their FT - IR spectra and the sorts of the blue ballpoint pen inks could be classified. Two kinds of blue ballpoint pen inks were selected to exposured to ultraviolet by timing. The relative ratio of peak height was determined by the calculation of the correction peak height. The fitting curve and program have been completed on thd basis of the regularity of the relative ratio of the peak height changed by time. Finally, the variation of the ink components by time has been discussed to confirm the age of the ink. |
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| Keywords: | FT - IR Microspeetroscope Nondestructive analysis Ballpoint pen ink Aging |
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