波谱学杂志 ›› 2016, Vol. 33 ›› Issue (2): 198-207.doi: 10.11938/cjmr20160203

• 研究论文 • 上一篇    下一篇

核磁共振氢谱法鉴定油性圆珠笔文书的书写时间

郑津, 薛惠芸, 林彩凤, 林德洵, 陆嘉, 杨慧, 王相鹏, 邹友思   

  1. 厦门大学 材料学院, 福建 厦门 361005
  • 收稿日期:2015-06-01 修回日期:2016-04-18 出版日期:2016-06-05 发布日期:2016-06-05
  • 通讯作者: 邹友思,电话:13860136496,E-mail:yszou@xmu.edu.cn. E-mail:yszou@xmu.edu.cn
  • 作者简介:郑津(1990-),福建福州人,硕士研究生,高分子化学与物理专业.

Dating Oily Ballpoint Pen Hand-Writings by 1H NMR Spectroscopy

ZHENG Jin, XUE Hui-yun, LIN Cai-feng, LIN De-xun, LU Jia, YANG Hui, WANG Xiang-peng, ZOU You-si   

  1. College of Materials, Xiamen University, Xiamen 361005, China
  • Received:2015-06-01 Revised:2016-04-18 Online:2016-06-05 Published:2016-06-05

摘要:

油性圆珠笔文书书写时间的鉴定是司法鉴定工作中的热点.该文采用核磁共振氢谱法(1H NMR)对所购6种不同型号油性圆珠笔的油墨进行了表征,研究了圆珠笔油墨中的溶剂——苯氧基乙醇在文书老化过程中的变化,并建立了MG-115书写文书的自然老化标准曲线.该标准曲线能够准确鉴定MG-115圆珠笔4个月内的文书书写时间,重现性良好;同时,该文探究了人工老化与自然老化的关系,为文书书写时间的鉴定提供了依据.

关键词: 油性圆珠笔, 书写时间, 核磁共振氢谱法(1H NMR), 苯氧基乙醇

Abstract:

Dating ballpoint pen hand-writings is a hot topic in forensic science. It remains untested whether NMR spectroscopy is suitable for this task. In this study, six types of oily ballpoint pen ink were characterized by 1H NMR spectroscopy. The same method was also used to measure the changes of 2-phenoxyethanol content in oily ballpoint pen hand-writings with aging. A standard curve was established based on the experimental results. It was demonstrated that, as long as the brand of the oily ballpoint pen used was known, hand-writings made within 4 months could be dated precisely. The effects of artificial aging and natural aging were compared subsequently. It was found that ten minutes in ultraviolet aging box corresponded to approximately one day of natural aging.

Key words: oily ballpoint pen, writing time, 1H NMR, 2-phenoxyethanol

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