Development of a GC-MS method for the simultaneous analysis of latent fingerprint components

Croxton, Ruth and Baron, Mark and Butler, David and Sears, Vaughn and Kent, Terry (2006) Development of a GC-MS method for the simultaneous analysis of latent fingerprint components. Journal of Forensic Sciences, 51 (6). pp. 1329-1333. ISSN 0022-1198

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Full text URL: http://www3.interscience.wiley.com/journal/1185190...

Abstract

Latent fingerprint residue is a complex mixture of organic and inorganic compounds. A full understanding of the composition of this mixture and how it changes after deposition is lacking. Three solvent systems were compared for the simultaneous extraction and derivatization with ethyl chloroformate of selected amino and fatty acids from a nonporous substrate (Mylars) for subsequent analysis by gas chromatography-mass spectrometry. A solvent system comprised of sodium hydroxide, ethanol, and pyridine was found to be the most effective. This method was applied to the analysis of latent fingerprint residue deposited on Mylars and preliminary data are presented. Twelve amino acids (e.g., serine, glycine, and aspartic acid) and 10 fatty acids (e.g., tetradecanoic, hexadecanoic, and octadecanoic acids) were identified. The potential
application of this method to further the understanding of latent fingerprint chemistry has been demonstrated.

Item Type:Article
Additional Information:Latent fingerprint residue is a complex mixture of organic and inorganic compounds. A full understanding of the composition of this mixture and how it changes after deposition is lacking. Three solvent systems were compared for the simultaneous extraction and derivatization with ethyl chloroformate of selected amino and fatty acids from a nonporous substrate (Mylars) for subsequent analysis by gas chromatography-mass spectrometry. A solvent system comprised of sodium hydroxide, ethanol, and pyridine was found to be the most effective. This method was applied to the analysis of latent fingerprint residue deposited on Mylars and preliminary data are presented. Twelve amino acids (e.g., serine, glycine, and aspartic acid) and 10 fatty acids (e.g., tetradecanoic, hexadecanoic, and octadecanoic acids) were identified. The potential application of this method to further the understanding of latent fingerprint chemistry has been demonstrated.
Keywords:forensic science, latent fingerprints, gas chromatography-mass spectrometry, ethyl chloroformate, latent fingerprint components
Subjects:F Physical Sciences > F110 Applied Chemistry
Divisions:College of Science > School of Life Sciences
ID Code:2448
Deposited By: Ruth Croxton
Deposited On:14 May 2010 10:50
Last Modified:13 Apr 2012 16:18

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