期刊
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
卷 85, 期 -, 页码 71-77出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.sab.2013.04.003
关键词
LIBS; Standoff; Explosive; Fingerprint; Imaging
类别
资金
- Secretaria General de Universidades, Investigacion y Tecnologia, Consejeria de Innovacion, Ciencia y Empresa de la Junta de Andalucia [P07-FQM-03308]
- Spanish Ministerio de Economia y Competitividad, Secretaria de Estado de Investigacion, Desarrollo e Innovacion [CTQ2007-60348]
Detection of explosive-contaminated human fingerprints constitutes an analytical challenge of high significance in security issues and in forensic sciences. The use of a laser-induced breakdown spectroscopy (LIBS) sensor working at 31 m distance to the target, fitted with 2D scanning capabilities and designed for capturing spectral information from laser-induced plasmas of fingerprints is presented. Distribution chemical maps based on Na and CN emissions are used to locate and detect chloratite, DNT, TNT, RDX and PETN residues that have been deposited on the surface of aluminum and glass substrates. An effectiveness of 100% on fingerprints detection, regardless the substrate scanned, is reached. Environmental factors that affect the prevalence of the fingerprint LIBS response are discussed. (C) 2013 Elsevier B.V. All rights reserved.
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