title: Analysis of sexual assault evidence by desorption electrospray ionization mass spectrometry.
abstract: Desorption electrospray ionization mass spectrometry (DESI-MS) is employed in the forensic analysis of chemical components present in condoms and imaging of latent fingerprints as circumstantial evidence of sexual assault. Polymers such as nonoxynol-9, polyethylene glycol, and polydimethylsiloxane, as well as small molecules additives such as N-methylmorpholine, N-octylamine, N,N-dibutyl formamide, and isonox 132, commonly used in lubricated condom formulations, were successfully characterized by DESI. The results suggest that DESI-MS is useful for identification of this type of evidence, and it has advantages over conventional extractive techniques, in terms of speed of analysis and ease of use.
authors.affiliation: Department of Chemistry, York University, Toronto, ON, M3J1P3, Canada.
authors.forename: Mario F
authors.initials: MF
authors.lastname: Mirabelli
authors.forename: Alexander
authors.initials: A
authors.lastname: Chramow
authors.forename: Elaine C
authors.initials: EC
authors.lastname: Cabral
authors.forename: Demian R
authors.initials: DR
authors.lastname: Ifa
mesh_terms: D000588:Amines / Q000032:analysis / Q000737:chemistry; D017280:Condoms; D003878:Dermatoglyphics; D004129:Dimethylpolysiloxanes / Q000032:analysis / Q000737:chemistry; D005554:Forensic Medicine / Q000379:methods*; D006801:Humans; D009025:Morpholines / Q000032:analysis / Q000737:chemistry; D017137:Nonoxynol / Q000032:analysis / Q000737:chemistry; D012408:Rubber / Q000737:chemistry; D012742:Sex Offenses; D021241:Spectrometry, Mass, Electrospray Ionization / Q000379:methods*
chemical_list: D000588:Amines; D004129:Dimethylpolysiloxanes; D009025:Morpholines; C038816:4-methylmorpholine; D017137:Nonoxynol; C013830:baysilon; D012408:Rubber; C008699:octylamine
keywords: DESI; ambient ionization; condoms; forensics; polymers