NACE discrimination of black ballpoint pen inks

被引：15

作者：

Zou, Hong ^{[1
]}

Wang, Zhiyong ^{[1
]}

Ye, Nengsheng ^{[1
]}

Xu, Rongfu ^{[1
]}

Zhu, Ruohua ^{[1
]}

Wang, Bingjuan ^{[1
]}

Gu, Xuexin ^{[1
]}

机构：

[1] Capital Normal Univ, Dept Chem, Beijing 100037, Peoples R China

来源：

CHROMATOGRAPHIA | 2008年 / 67卷 / 5-6期

关键词：

capillary electrophoresis; discrimination; basic dye; black ballpoint pen;

D O I：

10.1365/s10337-008-0528-3

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

A non-aqueous capillary electrophoresis (NACE) method was developed for analyzing seven basic dyes contained in black ballpoint pen inks. Baseline separation of the studied compounds was achieved on a 57 cm x 75 mu m capillary by using a non-aqueous solution composed of 1.0% acetic acid and 60 mM ammonium acetate in methanol medium. Based on the pattern of NACE electropherograms, 120 black ballpoint pens from different manufacturers were divided into six groups in terms of dye categories. Moreover, the black ballpoint pens from the same group may be further distinguished by cluster analysis based on the content of different dyes and some unknown peaks. Our results indicated that the developed NACE method is a credible warrant for investigation of the fraudulent documents.

引用

页码：483 / 486

页数：4

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