Analisis forensik pen mata bulat dakwat biru menggunakan spektrometer Ultralembayung-Nampak dan kromatografi cecair berprestasi ultra

Translated title of the contribution: Forensic analysis of blue ballpoint pen inks using ultraviolet-visible spectrometer and ultra-performance liquid chromatograph

Loong Chuen Lee, Karldiv Tarvin Singh Shandu, Nor Syahirah Mohamad Razi, Ab Aziz Ishak, Khairul Osman

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Twelve varieties of blue ballpoint pens were selected and analyzed using UV-Vis spectrometer and ultra-performance liquid chromatography (UPLC). The aim of the study was to determine discrimination power (DP) of these methods in differentiating pen inks collected from the market in Malaysia. Discrimination analysis of 66 possible pen-pair of blue ballpoint pens was carried out via one-way ANOVA based on obtained chromatogram and spectra. A total of 18 peaks were determined as coming from inks based on the chromatographic data extracted at three different wavelengths (279, 370 and 400 nm). While for the UV-Vis spectrometer analysis, presence of peaks at 303, 545, 577 and 584 nm wavelengths were recorded. UV-Vis spectral data were mainly produced by the colorant components (i.e., dyes) found in inks and UPLC may detect ink components other than dyes, i.e., additives. As conclusion, the DP for UV-Vis and UPLC were determined to be 72.12% and 98.48%, respectively. This manuscript demonstrates the potential of UPLC for discriminating pen inks based on non-dye components. Additionally, the dye components in inks do not seem to play important role in discrimination of pen inks.

Original languageMalay
Pages (from-to)397-401
Number of pages5
JournalMalaysian Journal of Analytical Sciences
Volume19
Issue number2
Publication statusPublished - 2015

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Light pens
Ink
Spectrometers
Liquid chromatography
Liquids
Ultraviolet spectrometers
Coloring Agents
Wavelength
Analysis of variance (ANOVA)

Keywords

  • Ballpoint pen inks
  • Discrimination power
  • Forensic ink analysis
  • Ultra-performance liquid chromatography
  • UV-Vis spectrometer

ASJC Scopus subject areas

  • Analytical Chemistry

Cite this

Analisis forensik pen mata bulat dakwat biru menggunakan spektrometer Ultralembayung-Nampak dan kromatografi cecair berprestasi ultra. / Lee, Loong Chuen; Shandu, Karldiv Tarvin Singh; Razi, Nor Syahirah Mohamad; Ishak, Ab Aziz; Osman, Khairul.

In: Malaysian Journal of Analytical Sciences, Vol. 19, No. 2, 2015, p. 397-401.

Research output: Contribution to journalArticle

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