Since substrate interference presents a significant challenge in characterizing body fluid traces with Raman spectroscopy at a crime scene, the current project explored several possible solutions, including the selection of laser excitation, isolating the signal of blood using spectral subtraction, and using a favorable substrate for collection that minimizes interference.
Simulated blood stain evidence was prepared and analyzed using a Raman microscope with variable laser capabilities. The findings indicate that the best approach for detecting blood depends on the nature of the substrate and the type of interference encountered. (publisher abstract modified)
Downloads
Similar Publications
- Comparative Evaluation of Genotyping Technologies for Investigative Genetic Genealogy in Sexual Assault Casework
- Partners in Crisis: Improving Police Response to Individuals in Moments of Crisis by Providing Service Alternatives
- Elucidation of the Effect of Solar Light on the Near-Infrared Excitation Raman Spectroscopy-Based Analysis of Fabric Dyes