Direct Analyte-Probed Nanoextraction Coupled to Nanospray Ionization-Mass Spectrometry of Drug Residues From Latent Fingerprints

• NCJ Number: 246134
• Journal: Journal of Forensic Sciences Volume: 58 Issue: 4 Dated: July 2013 Pages: 875-880
• Author(s): Kristina Clemons B.S.; Rachel Wiley B.S.; Kristin Waverka B.A.; James Fox M.Sc.; Eric Dziekonski B.S.; Guido F. Verbeck Ph.D.
• Date Published: July 2013
• Length: 6 pages
• Publication Format: Article
• Publication Type: Report (Study/Research)
• Language: English
• Country: United States of America

Annotation

Here, we present a method of extracting drug residues from fingerprints via Direct Analyte-Probed Nanoextraction coupled to nanospray ionization-mass spectrometry DAPNe-NSI-MS.

Abstract

Here, we present a method of extracting drug residues from fingerprints via Direct Analyte-Probed Nanoextraction coupled to nanospray ionization-mass spectrometry DAPNe-NSI-MS. This instrumental technique provides higher selectivity and lower detection limits over current methods, greatly reducing sample preparation, and does not compromise the integrity of latent fingerprints. This coupled to Raman microscopy is an advantageous supplement for location and identification of trace particles. DAPNe uses a nanomanipulator for extraction and differing microscopies for localization of chemicals of interest. A capillary tip with solvent of choice is placed in a nanopositioner. The surface to be analyzed is placed under a microscope, and a particle of interest is located. Using a pressure injector, the solvent is injected onto the surface where it dissolves the analyte, and then extracted back into the capillary tip. The solution is then directly analyzed via NSI-MS. Analyses of caffeine, cocaine, crystal methamphetamine, and ecstasy have been performed successfully. Abstract published by arrangement with Wiley.