Study on Analysis of Copy Paper by Fourier Transform Infrared Spectroscopy
LI Ji-min1, 3, WANG Yan-ji2, WANG Jing-han3, YAO Li-juan3, ZHANG Biao3
1. Faculty of Chemistry, Northeast Normal University, Changchun 130024, China 2. Chinese People’s Public Security University，Beijing 100038, China 3. Department of Forensic Medicine，China Criminal Police College, Shenyang 110035, China
Abstract：A new method of fast identification of copy papers by Fourier transform infrared spectroscopy (FTIR) was developed. The kinds of filler and the cellulosic degree of crystallinity were analyzed by FTIR, and the ageing curves of cellulosic paper were studied with heating and ultraviolet light. The cellulosic degree of crystallinity was showed by the ratio of absorbance at 1 429 cm-1 to that at 893 cm-1, the standard deviation of different brands of copy papers was 0.010 7-0.016 0, and the standard deviation of the same brands of copy papers was 0.014 8. The kinds of filler and the cellulosic degree of crystallinity were different in copy papers from different brands of different manufacturing plants, different brands of same manufacturing plants and different manufacturing times of the same brands from the same manufacturing plants, and the curves of ageing were different with heating and ultraviolet light. The results of fast identification of copy papers by FTIR are satisfactory.
李继民1，3,王彦吉2,王景翰3,姚丽娟3,张彪3 . 傅里叶变换红外光谱法分析复印纸的研究[J]. 光谱学与光谱分析, 2009, 29(06): 1521-1525.
LI Ji-min1, 3, WANG Yan-ji2, WANG Jing-han3, YAO Li-juan3, ZHANG Biao3 . Study on Analysis of Copy Paper by Fourier Transform Infrared Spectroscopy . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2009, 29(06): 1521-1525.
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