Analisis forensik cepat dan mudah bagi dakwat pen merah menggunakan kromatografi cecair berprestasi ultra

Translated title of the contribution: Fast and simple forensic red pen ink analysis using ultra-performance liquid chromatography (UPLC)

Loong Chuen Lee, Seow Lay Ying, Wan Nur Syazwani Wan Mohamad Fuad, Ab Aziz Ishak, Khairul Osman

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

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.

Original languageMalay
Pages (from-to)224-230
Number of pages7
JournalMalaysian Journal of Analytical Sciences
Volume20
Issue number2
Publication statusPublished - 2016

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Liquid chromatography
Ink
High performance liquid chromatography
Analysis of variance (ANOVA)

ASJC Scopus subject areas

  • Analytical Chemistry

Cite this

Analisis forensik cepat dan mudah bagi dakwat pen merah menggunakan kromatografi cecair berprestasi ultra. / Lee, Loong Chuen; Ying, Seow Lay; Fuad, Wan Nur Syazwani Wan Mohamad; Ishak, Ab Aziz; Osman, Khairul.

In: Malaysian Journal of Analytical Sciences, Vol. 20, No. 2, 2016, p. 224-230.

Research output: Contribution to journalArticle

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abstract = "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.",
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