Sharif Mehwish, Jalees Muhammad Irfan, Ali Shah Tirmazi Syed Azhar, Athar Muhammad Makshoof, Durrani Arjumand Iqbal, Batool Madeeha
School of Chemistry, University of the Punjab, Lahore 54590, Pakistan.
Institute of Environmental Engineering and Research, University of Engineering and Technology, Lahore 54890, Pakistan.
Int J Anal Chem. 2022 Mar 30;2022:7186625. doi: 10.1155/2022/7186625. eCollection 2022.
In developing countries, the chances of fraud in written documents are comparatively high. Therefore, comparison of fountain pen inks is especially imperative in examination of forensic questioned documents. We have investigated the use of the gas chromatography-mass spectrometry technique in profiling and discrimination of fountain pen ink used in Pakistan for forensic purpose. The main purpose of this study was to discriminate different Pakistani fountain pen inks. The datum for Pakistani inks of fountain pen is not obtainable. In this research study, blue, black, and green colors fountain pen inks commercially used in Pakistan have been extracted from paper using micropunch and then investigated using the gas chromatography-mass spectrometry technique. Gas chromatography-mass spectrometry (GC-MS) was used to differentiate various brands of different colors of fountain pen inks based on their chemical composition. Molecular ion peaks for different components were obtained, and components were identified on the basis of detected ions. Results have been calculated and compared in terms of discriminating power (D.P.). The D.P. for blue, black, and green inks of fountain pen was 1.0 by using the gas chromatography-mass spectrometry technique.
在发展中国家，书面文件存在欺诈的可能性相对较高。因此，在法医鉴定有疑问的文件时，对钢笔墨水进行比对尤为必要。我们研究了气相色谱 - 质谱技术在巴基斯坦用于法医目的的钢笔墨水分析和鉴别中的应用。本研究的主要目的是鉴别不同的巴基斯坦钢笔墨水。目前无法获取巴基斯坦钢笔墨水的数据。在这项研究中，从纸张上使用微型冲头提取了巴基斯坦商业使用的蓝色、黑色和绿色钢笔墨水，然后使用气相色谱 - 质谱技术进行研究。气相色谱 - 质谱（GC - MS）用于根据不同颜色钢笔墨水的化学成分区分各个品牌。获得了不同成分的分子离子峰，并根据检测到的离子对成分进行了鉴定。已根据鉴别能力（D.P.）计算并比较了结果。使用气相色谱 - 质谱技术时，蓝色、黑色和绿色钢笔墨水的鉴别能力为1.0。
