Online nonaqueous capillary electrophoresis–mass spectrometry method for the simultaneous screening of synthetic organic dyes

IF 2.2 4区 化学
Joon Yub Kwon, Yun-Cheol Na, Seong Ho Kang
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引用次数: 0

Abstract

The increasing sophistication of handwriting forgery techniques highlights the need for reliable document authentication methods. This study reports an online nonaqueous capillary electrophoresis–mass spectrometry method for the simultaneous screening of several synthetic organic dyes, namely methylene blue, malachite green, crystal violet, methyl violet, Victoria blue basic oxide, and rhodamine B. All dyes were analyzed within 18 min under an electric field of 389 V/cm using a nonaqueous running buffer system (pH 4.5; 50 mM ammonium acetate and 850 mM acetic acid in 100% ethanol) and the single-ion monitoring scan mode for signal enhancement. Ink organic dyes in documents handwritten using commercial red and blue ballpoint pens were extracted with ethanol from pieces of paper created by punching and successfully identified using the developed method to validate its applicability to real forensic samples and demonstrate its suitability for the rapid and effective forensic ink analysis coupled with document authentication.

Abstract Image

在线非水毛细管电泳-质谱法同时筛选合成有机染料
笔迹伪造技术的日益复杂凸显了对可靠的文档认证方法的需求。本研究报告了一种在线非水毛细管电泳-质谱法,用于同时筛选几种合成有机染料,即亚甲基蓝、孔雀石绿、结晶紫、甲基紫、维多利亚蓝碱性氧化物和罗丹明b。所有染料在389 V/cm的电场下,使用非水运行缓冲系统(pH 4.5;50 mM醋酸铵和850 mM醋酸(100%乙醇)和单离子监测扫描模式的信号增强。用乙醇从打孔生成的纸张中提取商业红色和蓝色圆珠笔手写的文件中的墨水有机染料,并使用所开发的方法成功识别,验证了其对真实法医样本的适用性,并证明了其快速有效的法医墨水分析与文件认证的适用性。
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来源期刊
Bulletin of the Korean Chemical Society
Bulletin of the Korean Chemical Society Chemistry-General Chemistry
自引率
23.50%
发文量
182
期刊介绍: The Bulletin of the Korean Chemical Society is an official research journal of the Korean Chemical Society. It was founded in 1980 and reaches out to the chemical community worldwide. It is strictly peer-reviewed and welcomes Accounts, Communications, Articles, and Notes written in English. The scope of the journal covers all major areas of chemistry: analytical chemistry, electrochemistry, industrial chemistry, inorganic chemistry, life-science chemistry, macromolecular chemistry, organic synthesis, non-synthetic organic chemistry, physical chemistry, and materials chemistry.
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