Abstract：As it is a frequently encountered problem in the laboratory of forensic science nowadays to distinguish whether the questioned documents, such as deeds, contracts, and receipts, written in ballpoint pen inks are true or not, and identify the writing age of them, it is very essential to establish a simple, sensitive and accurate method to examine the similarities and differences of the ballpoint pen inks and identify the writing age. The present paper introduces a technique that allows identifying the kind and the writing age of the blue ballpoint pen inks. The technique is based on using a high performance liquid chromatographic method for distinguishing the similarities and differences in dyes of blue ballpoint pen inks and determining changes in dyes of blue ballpoint pen inks developed with age, and these changes can be evaluated by the ratio of peak areas.
Key words：High performance liquid chromatography;Ballpoint pen ink;Kind;Writing age
史晓凡1,李心倩1,许英健1,王景翰1,王彦吉2 . 高效液相色谱法鉴定蓝色圆珠笔油墨字迹的书写时间[J]. 光谱学与光谱分析, 2006, 26(09): 1765-1768.
SHI Xiao-fan1, LI Xin-qian1, XU Ying-jian1, WANG Jing-han1, WANG Yan-ji2 . Determination of Writing Age of Blue Ballpoint Pen Inks by High Performance Liquid Chromatography. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2006, 26(09): 1765-1768.
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