Surface Modification for the Collection and Identification of Fingerprints and Colorimetric Detection of Urea Nitrate

• Shoronia N. Cross ^[1] ; Elliot Quinteros ^[1] ; Marcel Roberts ^[1]
  1. [1] City University of New York

     City University of New York

     Estados Unidos

     
• Localización: Journal of forensic sciences, ISSN-e 1556-4029, ISSN 0022-1198, Vol. 60, Nº. 1, 2015, págs. 193-196
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • Glass surfaces were modified with a combination of dyes and reagents to allow for the potential simultaneous recording of a detailed fingerprint and the detection of the explosive urea nitrate (UN), as a proof of principle of surface modification for simultaneous linking of identity to manipulation of explosives. By coating microscope slides with 9,10-diphenylanthracene (DPA), p-dimethylaminobenzaldehyde (p-DMAB) and p-dimethylaminocinnamaldehyde (p-DMAC), a colorimetric change was observed in the presence of UN, while revealing a fingerprint with enough resolution to isolate at least 10 minutiae. This is the first step in creating point-of-care devices capable of detecting low concentrations of explosives and drug metabolites and connecting them to a fingerprint.