Analysis of ballpoint pen inks by field desorption mass spectrometry

被引:1
|
作者
Sakayanagi, M
Komuro, J
Konda, Y
Watanabe, K
Harigaya, Y
机构
[1] Kanagawa Prefectural Police Headquaters, Sci Criminal Investigat Lab, Chem Sect, Naka Ku, Yokohama, Kanagawa 2310023, Japan
[2] Kitasato Univ, Sch Pharmaceut Sci, Tokyo 108, Japan
关键词
forensic science; questioned documents; ballpoint pen ink; mass spectrometry; Field Desorption;
D O I
暂无
中图分类号
DF [法律]; D9 [法律]; R [医药、卫生];
学科分类号
0301 ; 10 ;
摘要
Destructive identification of ballpoint pen ink was performed using field desorption mass spectrometry (FDMS) to determine the basic dyes in ballpoint pen ink. Seven different brands of black, blue, and red ballpoint pen inks (total: 21 samples) were examined in this study. A 1-mm section was cut from an ink Line drawn on paper and used as the sample. Extraction was performed with methanol. Analysis of each extract by FDMS showed the molecular ion peak of each dye and the black, blue, and red inks were then classified into 6, 6, and 6 types, respectively, based on the ions detected. The results indicated that it was possible to distinguish between manufacturers of ballpoint pens. This analysis of ballpoint pen inks was found to be effective and the method was applied to the analysis of an actual forensic sample.
引用
收藏
页码:1204 / 1214
页数:11
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