Issue 15, 2020

Analysis of amino acid enantiomers from aged fingerprints

Abstract

Fingerprints found at a crime scene can be key in criminal investigations. A method to accurately determine the age of the fingerprint, potentially crucial to linking the fingerprint to the crime, is not available at the moment. In this paper, we show that the use of the enantiomeric ratio of D/L-serine in fingerprints could pose as interesting target for age estimation techniques. We developed a UPLC-MS/MS method to determine the enantiomer ratios of histidine, serine, threonine, alanine, proline, methionine and valine from fingerprint residue. We found a significant change only in the relative ratio of D-serine with increasing fingerprint age after analysis of fingerprints up to 6 months old.

Graphical abstract: Analysis of amino acid enantiomers from aged fingerprints

Supplementary files

Article information

Article type
Technical Note
Submitted
16 Jan 2020
Accepted
21 Mar 2020
First published
27 Mar 2020
This article is Open Access
Creative Commons BY-NC license

Anal. Methods, 2020,12, 2052-2057

Analysis of amino acid enantiomers from aged fingerprints

W. van Helmond, M. Weening, V. Vleer and M. de Puit, Anal. Methods, 2020, 12, 2052 DOI: 10.1039/D0AY00096E

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