Analysis of Volatile Solvent Components in Ink Blot Samples Prepared by 84 Inks from 3 Common Brands of Ink-Jet Printers by GC-MS
摘 要
建立了气相色谱-质谱法(GC-MS)分析市售3种常见品牌喷墨打印机所使用的84种墨水制备的墨迹样品中的挥发性溶剂成分,并对不同墨迹中的溶剂成分的组成进行了归类总结。用不同型号的A、B品牌打印机的原装墨水打印A4纸,将C品牌打印机不同型号的墨水滴在A4纸上制备墨迹样本,第二天用打孔器取样,用含5 mg·L-1苯甲酸乙酯的甲醇溶液提取其中的挥发性溶剂成分,提取液不分流进样,在HP-INNOWAX色谱柱上用程序升温分离其中的溶剂成分,再用配有电子轰击离子源(EI)的质谱仪进行检测,以保留时间和定性离子定性。结果显示:84种墨迹样本中的溶剂有二甘醇、三甘醇、2-吡咯烷酮、N-羟乙基-2-吡咯烷酮、甘油、1,5-戊二醇、3-甲基-1,5-戊二醇、2-乙基-2-(羟甲基)-1,3-丙二醇、1,6-己二醇、2-甲基-1,3-丙二醇、1,2-己二醇、三甘醇单丁醚等12种,且不同品牌、 同种品牌不同型号的样本中挥发性溶剂组成具有一定特征性,以此可以将不同品牌乃至型号的墨迹样本进行区分,可为司法鉴定中喷墨打印文件真伪的鉴定提供技术参考。
Abstract
A method was established to analyze the volatile solvent components in 84 ink blot samples prepared by 84 inks from 3 common brands of ink-jet printers by GC-MS, and the solvent components in different inks were classified and summarized. A4 paper was printed with original inks of different models of A and B brand printers, and ink drops blot of different models of C brand printer inks were collected with A4 paper. Samples were taken with a hole punch the next day, and volatile solvent components were extracted with methanol solution containing 5 mg·L-1 ethyl benzoate, and the extract was introduced into the GC-MS without split flow. The solvent components were separated by temperature programmed on an HP-INNOWAX chromatographic column, and then detected by mass spectrometer equipped with electron impact ion source (EI) for qualitative analysis with retention time and qualitative ions. The results showed that 12 solvents in 84 ink blot samples obtained were diethylene glycol, triethylene glycol, 2-pyrrolidinone, 1-(2-Hydr-oxyethyl)-2-pyrrolidone, glycerol, 1,5-pentanediol, 3-methyl-1,5-pentanediol, trimethylol propane, 1,6-hexanediol, 2-methyl-1,3-propanediol, 1,2-hexanediol, triethylene glycol monobutyl ether. The composition of volatile solvents in samples of different brands or different models of the same brand had certain characteristic, which can distinguish the ink blot samples of different brands and even models and provide technical reference for the identification of the authenticity of ink-jet printed documents in judicial identification.
中图分类号 O657.63 DOI 10.11973/lhjy-hx202109003
所属栏目 工作简报
基金项目 国家自然科学基金(61605132,U1736102);上海市领军人才计划(202079);财政部公益专项(GY2019D-1,GY2015G-6);公安部科技强警基础工作专项基金(2019GABJC03);中国刑事警察学院研究生创新能力提升项目资助(2020YCYB36)
收稿日期 2021/3/2
修改稿日期
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联系人作者陈晓红(chenxh@ssfjd.cn)
备注王舒超,硕士研究生,主要研究方向为文件检验
引用该论文: WANG Shuchao,CUI Lan,SONG Hui,XU Shuang,ZHAO Pengcheng,CHEN Xiaohong. Analysis of Volatile Solvent Components in Ink Blot Samples Prepared by 84 Inks from 3 Common Brands of Ink-Jet Printers by GC-MS[J]. Physical Testing and Chemical Analysis part B:Chemical Analysis, 2021, 57(9): 781~787
王舒超,崔岚,宋辉,徐爽,赵鹏程,陈晓红. 气相色谱-质谱法分析3种常见品牌喷墨打印机84种墨水制备的墨迹样本中挥发性溶剂成分[J]. 理化检验-化学分册, 2021, 57(9): 781~787
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【9】MAZZELLA W D, KHANMY-VITAL A. A study to investigate the evidential value of blue gel pen inks.[J]. Journal of Forensic Sciences, 2003, 48(2):419-424.
【10】王元凤, 姚丽娟, 王景翰, 等. 高效薄层色谱法检测喷墨打印墨水[J]. 广东公安科技, 2004, 12(2):24-26.
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【13】POON N L, HO S S H, LI C K. Differentiation of coloured inks of inkjet printer cartridges by thin layer chromatography and high performance liquid chromatography[J]. Science & Justice, 2005, 45(4):187-194.
【14】许英健, 王景翰, 史晓凡, 等. 高效液相色谱法分析黑色喷墨打印墨水(盒)的种类[J]. 中国人民公安大学学报(自然科学版), 2009, 15(1):5-8.
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