Forensic evidence analysis is a pivotal juncture in crime investigation and law enforcement. After the forensic evidences are collected in crime scenes, they are primarily analyzed in forensic laboratory using various standard protocols and experimental techniques. A final report was submitted in the court, considering the findings report and case report. The forensic evidences include forensic drugs, body fluids, explosives, inks, paintings, and biological agents. Most of forensic evidences are complex and contains impurities, such as cutting agents, thinners, adulterants, by-products, and intermediates. In particular, the crime scenes may include a variety of environmental conditions, which may affect the forensic samples and produce impurities. The impurities of the forensic evidences can be used in chemical signature analysis as the chemical fingerprinting or profiling, which provide insightful and specific information in crime investigation. Forensic signature analysis involves analyzing the samples composition beyond simple identification and quantitation of forensic evidences. The signature analytical data are able to categorize the forensic samples into similar groups and offer investigative information of a common origin.
Last date updated on July, 2014