Revealing the location of semen, vaginal fluid and urine in stained evidence through near infrared chemical imaging
Identifiers
Permanent link (URI): http://hdl.handle.net/10017/40712DOI: 10.1016/j.talanta.2017.01.086
ISSN: 0039-9140
Date
2017-01-31Affiliation
Universidad de Alcalá. Departamento de Química Analítica, Química Física e Ingeniería QuímicaBibliographic citation
Talanta, 2017, v. 166, p. 292-299
Keywords
Near Infrared Hyperspectral Imaging
Semen
Urine
Vaginal fluid
Project
IUICP- 2016-002 (Instituto Universitario de Investigación en Ciencias Policiales - Universidad de Alcalá)
Document type
info:eu-repo/semantics/article
Version
info:eu-repo/semantics/publishedVersion
Rights
Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)
© Elsevier 2017
Access rights
info:eu-repo/semantics/openAccess
Abstract
Crime scene investigation (CSI) requires the ultimate available technology for a rapid, non-destructive, and accurate detection of a wide variety of evidence including invisible stains of bodily fluids. Particularly crucial is the discrimination of semen in stained evidence from sexual abuse cases. This is because those evidence have high odds of containing the DNA from the aggressor. To this aim, we demonstrated the potential of near infrared hyperspectralimaging (NIR-HSI) to make visible stains of semen, vaginal fluid, and urine on fabrics, which lays the bases to face the challenging visualization and discrimination of semen within bodily fluids mixtures. Combining the NIR-HSI data and simple chemometric techniques such as principal component analysis and classical least squares regression, we have revealed the location of semen, vaginal fluid and urine in bodily fluids stained evidence.
Files in this item
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Revealing_Zapata_Talanta_2017.pdf | 1.579Mb |
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Revealing_Zapata_Talanta_2017.pdf | 1.579Mb |
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