10.25394/PGS.8986175.v1 Jacqueline Syra Ruchti Jacqueline Syra Ruchti Analysis of TNT, DNA Methylation, and Hair Pigmentation via Gas Chromatography-Mass Spectrometry and Spectroscopic Techniques Purdue University Graduate School 2019 TNT Explosive GC-MS DNA methylation Hair pigmentation Raman MSP FTIR M-Vac Forensic Chemistry 2019-10-16 17:15:33 Thesis https://hammer.purdue.edu/articles/thesis/Analysis_of_TNT_DNA_Methylation_and_Hair_Pigmentation_via_Gas_Chromatography-Mass_Spectrometry_and_Spectroscopic_Techniques/8986175 This work consisted of three projects. The first focused on analyzing TNT residue collected from post-blast backpack debris with an M-Vac. The second focused on analyzing DNA methylation in blowflies to determine a post-mortem interval based on the blowfly's age. The third focused on analyzing hair pigmentation to build a statistical database to further support evidence presented in court.