Chemical Imaging of Latent Fingerprint Residues

Camilla Ricci, Phiraporn Phiriyavityopas, Nicholas Curum, K. L Andrew Chan, Sue Jickells, Sergei G. Kazarian

Research output: Contribution to journalArticlepeer-review

89 Citations (Scopus)

Abstract

In situ attenuated total reflection Fourier transform infrared (ATR-FT-IR) spectroscopic imaging has been used to obtain chemical images of fingerprints under controlled humidity and temperature. The distribution of lipid and amino acid components in the fingerprints from different donors left on the surface of the ZnSe crystal has been studied using an in situ FT-IR spectroscopic imaging approach under a controlled environment and studied as a function of time. Univariate and multivariate analyses were employed to analyze the spectroscopic dataset. Changes in the spectra of lipids with temperature and time have been detected. This information is needed to understand aging of the fingerprints. The ATRFT-IR spectroscopic imaging offers a new and complementary means for studying the chemistry of fingerprints that are left pristine for further analysis. This study demonstrates the potential for visualizing the chemical changes of fingerprints for forensic applications by spectroscopic imaging.

Original languageEnglish
Pages (from-to)514-522
Number of pages9
JournalApplied Spectroscopy
Volume61
Issue number5
DOIs
Publication statusPublished - 1 May 2007

Keywords

  • Aging
  • ATR-FT-IR spectroscopy
  • Attenuated total reflection
  • Chemical imaging
  • Fingerprints
  • Forensic science
  • Fourier transform infrared spectroscopy
  • Infrared
  • Multivariate analysis

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