Fast Analysis of Complete Macroscopic Gunshot Residues on Substrates Using Raman Imaging.

摘要: Raman spectroscopy has emerged as a viable technique for the organic analysis of gunshot residues (GSRs), offering additional information to well-established using scanning electron microscopy coupled with energy-dispersive X-ray (SEM-EDX). In this article, imaging system an electron-multiplying coupled-charged device (EMCCD) camera was used analyze complete GSR particles from both conventional and nontoxic ammunition fired at different cloth targets. The same cloths were then stained blood mimic real evidence measured. direct collected stubs SEM-EDX (the frequent method collection) evaluated. Multivariate curve-resolution chemical-mapping methods applied spectroscopic data identify highlight signal corresponding differentiate them substrates. It confirmed that measurement approaches (on...