New perspectives in the use of ink evidence in forensic science: Part I. Development of a quality assurance process for forensic ink analysis by HPTLC

Neumann, Cédric; Margot, Pierre

doi:10.1016/j.forsciint.2008.11.016

Cited by 47 publications

(57 citation statements)

References 25 publications

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“…Pen-pairs that cannot be differentiated from each other may have the same or very similar formulation. In other words, this indicates the possibility of purchasing inks from a single ink manufacturer as an inks manufacturer may sell their ink to more than one instrument manufacturers [14]. In brief, the proposed approach gave discrimination power around 95.45 %.…”

Section: Resultsmentioning

confidence: 92%

“…Previous studies used to discriminate ballpoint pen inks based on profiling of dye components by chromatographic techniques [13,14,19]. Most of the dye components of red ballpoint pen inks have maximum UV-absorption above 500 nm, i.e.…”

Section: Resultsmentioning

confidence: 99%

“…Feasibility of HPLC for blue ballpoint pen ink classification has been studied as well [11,12]. While Neumann and Margot have investigated the feasibility of high performance thin layer chromatography (HPTLC) for blue ballpoint pen inks [13,14].…”

Section: -2506mentioning

confidence: 99%

See 2 more Smart Citations

Fast and Simple Forensic Red Pen Ink Analysis Using Ultra-Performance Liquid Chromatography (Uplc)

Lee¹,

Ying²,

Fuad³

et al. 2016

MJAS

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Ultra-performance liquid chromatography (UPLC) is more effective than high performance liquid chromatography in terms of analysis speed and sensitivity. This paper presents a feasibility study on forensic red pen inks analysis using UPLC. A total of 12 varieties of red ballpoint pen inks were purchased from selected stationary shop. For each variety, four different individual pens were sampled to provide intra-variability within a particular variety of pen. The proposed approach is very simple that it only involved limited analysis step and chemicals. A total of 144 chromatograms were obtained from red ink entries extracted with 1.5 mL 80 % (v/v) acetonitrile. Peaks originated from pen inks were determined by comparing the chromatograms of both blank paper and blank solvent against that of ink samples. Subsequently, one-way ANOVA was conducted to discriminate all 66 possible pairs for red pen inks. Results showed that the proposed approach giving discriminating power of 95.45 %. The outcome of the study indicates that UPLC could be a fast and simple approach to red ballpoint pen inks analysis.Keywords: forensic ink analysis, ballpoint pen inks, ultra-performance liquid chromatography Abstrak Kromatografi cecair berprestasi Ultra (UPLC) adalah lebih berkesan dari kromatografi cecair berprestasi tinggi dari segi kelajuan analisis dan kepekaan. Kertas ini mempersembahkan kajian kebolehlaksanaan pada analisis dakwat pen merah menggunakan UPLC. Sebanyak 12 jenis dakwat pen mata bulat merah dibeli dari kedai alat tulis yang terpilih. Untuk setiap jenis, empat batang pen telah disampel untuk memberi maklumat tentang intra-variasi bagi suatu jenis pen. Pendekatan yang dicadangkan adalah mudah kerana ia hanya melibatkan langkah analisis dan bahan kimia yang terhad. Sejumlah 144 kromatogram telah diperolehi dari dakwat tulisan merah yang diekstrak dengan 1.5 mL 80 % (v/v) asetonitril. Puncak yang berasal dari dakwat pen ditentukan melalui perbandingan antara kromatogram kertas kosong dan pelarut kosong dengan yang diperolehi dari sampel dakwat. Seterusnya, ujian ANOVA sehala telah dijalankan untuk membezalayan kesemua 66 pasangan dakwat pen merah yang terbentuk. Keputusan menunjukkan pendekatan yang dicadangkan memberi 95.45 % kuasa pembezalayan. Hasil kajian ini menunjukkan UPLC dapat dijadikan satu pendekatan yang cepat dan mudah untuk analisis dakwat pen mata bulat merah.

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Section: Resultsmentioning

confidence: 92%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Fast and Simple Forensic Red Pen Ink Analysis Using Ultra-Performance Liquid Chromatography (Uplc)

Lee¹,

Ying²,

Fuad³

et al. 2016

MJAS

View full text Add to dashboard Cite

show abstract

“…Nowadays, varieties of ink composition are available in the market which consists of various organic, inorganic and synthetic material with various characteristics and properties 1,2 . Disappearing ink is used as marking system for sports, in dress making industry.…”

Section: Introductionmentioning

confidence: 99%

Decipherment Of Disappeared Ink: A Case Study

Hemantini¹,

Khudbudin²

2018

BJFS

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“…The most common forensic methods for analyzing inks from documents are thin layer chromatography (TLC) and optical examination [4][5][6][7][8][9]. Optical examination is quick and nondestructive, and it is often sufficient for the relevant questions in a particular case, but it is useful only when a direct sample comparison can be made between the ink in question and reference samples.…”

Section: Introductionmentioning

confidence: 99%

Analysis of writing inks on paper using direct analysis in real time mass spectrometry

Jones¹,

McClelland²

2013

Forensic Science International

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Ink analysis is central to questioned document examination. We applied direct analysis in real time mass spectrometry (DART MS) to ballpoint, gel, and fluid writing ink analysis. DART MS acquires the mass spectrum of an ink while it is still on a document without altering the appearance of the document. Spectra were acquired from ink on a variety of papers, and the spectrum of the blank paper could be subtracted out to produce a cleanly isolated ink spectrum in most cases. Only certain heavy or heavily processed papers interfered. The time since an ink is written on paper has a large effect on its spectrum. DART spectra change radically during the first few months after an ink is written as the more volatile components evaporate, but the spectra stabilize after that. A library-search study involving 166 well-aged inks assessed the ability to identify inks from their DART spectra. The aggregate success rate was 92%. ABSTRACTInk analysis is central to questioned document examination. We applied direct analysis in real time mass spectrometry (DART MS) to ballpoint, gel, and fluid writing ink analysis. DART MS acquires the mass spectrum of an ink while it is still on a document without altering the appearance of the document. Spectra were acquired from ink on a variety of papers, and the spectrum of the blank paper could be subtracted out to produce a cleanly isolated ink spectrum in most cases. Only certain heavy or heavily processed papers interfered. The time since an ink is written on paper has a large effect on its spectrum. DART spectra change radically during the first few months after an ink is written as the more volatile components evaporate, but the spectra stabilize after that. A library-search study involving 166 well-aged inks assessed the ability to identify inks from their DART spectra. The aggregate success rate was 92%.

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New perspectives in the use of ink evidence in forensic science: Part I. Development of a quality assurance process for forensic ink analysis by HPTLC

Cited by 47 publications

References 25 publications

Fast and Simple Forensic Red Pen Ink Analysis Using Ultra-Performance Liquid Chromatography (Uplc)

Fast and Simple Forensic Red Pen Ink Analysis Using Ultra-Performance Liquid Chromatography (Uplc)

Decipherment Of Disappeared Ink: A Case Study

Analysis of writing inks on paper using direct analysis in real time mass spectrometry

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