alexa Multidimensional Raman spectroscopic signature of sweat and its potential application to forensic body fluid identification.
Medicine

Medicine

Journal of Forensic Medicine

Author(s): Sikirzhytski V, Sikirzhytskaya A, Lednev IK

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Abstract This proof-of-concept study demonstrated the potential of Raman microspectroscopy for nondestructive identification of traces of sweat for forensic purposes. Advanced statistical analysis of Raman spectra revealed that dry sweat was intrinsically heterogeneous, and its biochemical composition varies significantly with the donor. As a result, no single Raman spectrum could adequately represent sweat traces. Instead, a multidimensional spectroscopic signature of sweat was built that allowed for the presentation of any single experimental spectrum as a linear combination of two fluorescent backgrounds and three Raman spectral components dominated by the contribution from lactate, lactic acid, urea and single amino acids. Copyright © 2011 Elsevier B.V. All rights reserved. This article was published in Anal Chim Acta and referenced in Journal of Forensic Medicine

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