| Abstrakt: |
One of the biggest challenges in forensic analysis is the correct identification in terms of class characteristics of unknown materials found in a crime scene or crime scene related. Not only in several cases there is nothing to compare to and establish individualization, but also the mere identification of these class characteristics may allow prosecuting new lines of investigation. Forensic document analysis comprises the characterization, identification and differentiation of various materials such as inks, paper, glues, coatings, laminates, waxes, among others for which it is necessary to use advanced analytical methodologies. In the present work, some unknown materials were correctly identified and characterized using techniques such as Fourier Transform Infrared Spectroscopy (FTIR), Scanning Electron Microscopy with Energy Dispersive X-Ray Spectroscopy (SEM / EDX) and High Performance Liquid Chromatography (HPLC), as well as morphology characterization and other physical and chemical characteristics inherent to the suspicious material under study. Based on some case studies, the significant contribution of this kind of identification to the criminal investigation will be demonstrated. [ABSTRACT FROM AUTHOR] |
