Journal
ELECTROCHEMISTRY COMMUNICATIONS
Volume 23, Issue -, Pages 52-55Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.elecom.2012.07.004
Keywords
Sensor strip; Abrasive stripping voltammetry; Gunshot residue; Sampling
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Funding
- [HQ0034-11-C-0034]
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Increasing security needs require field-deployable, on-the-spot detection tools for the rapid and reliable identification of gunshot residue (GSR), and thus the collection of GSR samples is a crucial step in forensic analysis. In this work we demonstrate a novel protocol integrating GSR sampling and electroanalysis using microfabricated carbon sensor-strips. The new integrated sampling/detection methodology relies on abrasive stripping voltammetry (AbrSV) involving an initial mechanical transfer of trace amounts of surface-confined GSR from the hand of a suspect directly onto the electrode contingent of the sensor strip, which is immediately ready for electrochemical analysis. The integrated sampling/detection method holds much promise as a portable, rapid and inexpensive system to promptly identify a subject who has discharged a firearm in various forensic scenarios. (C) 2012 Elsevier B.V. All rights reserved.
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