Electronic aroma detection technology for forensic and law enforcement applications

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A major problem hindering criminal investigations is the lack of appropriate tools for proper crime scene investigations. Often locating important pieces of evidence means relying on the ability of trained detection canines. Development of analytical technology to uncover and analyze evidence, potentially at the scene, could serve to expedite criminal investigations, searches, and court proceedings. To address this problem, a new technology based on gas sensor arrays was investigated for its applicability to forensic and law enforcement problems. The technology employs an array of sensors that respond to volatile chemical components yielding a characteristic `fingerprint` pattern representative of the vapor- ... continued below

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13 p.

Creation Information

Barshick, S.-A.; Griest, W.H. & Vass, A.A. December 31, 1996.

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This article is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. More information about this article can be viewed below.

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Description

A major problem hindering criminal investigations is the lack of appropriate tools for proper crime scene investigations. Often locating important pieces of evidence means relying on the ability of trained detection canines. Development of analytical technology to uncover and analyze evidence, potentially at the scene, could serve to expedite criminal investigations, searches, and court proceedings. To address this problem, a new technology based on gas sensor arrays was investigated for its applicability to forensic and law enforcement problems. The technology employs an array of sensors that respond to volatile chemical components yielding a characteristic `fingerprint` pattern representative of the vapor- phase composition of a sample. Sample aromas can be analyzed and identified using artificial neural networks that are trained on known aroma patterns. Several candidate applications based on known technological needs of the forensic and law enforcement communities have been investigated. These applications have included the detection of aromas emanating from cadavers to aid in determining time since death, drug detection for deterring the manufacture, sale, and use of drugs of abuse, and the analysis of fire debris for accelerant identification. The results to date for these applications have been extremely promising and demonstrate the potential applicability of this technology for forensic use.

Physical Description

13 p.

Notes

OSTI as DE97001381

Source

  • Photonics East `96: International Society for Optical Engineering (SPIE) conference and exhibition on photonic sensors and controls for commercial applications, Boston, MA (United States), 19-21 Nov 1996

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  • Other: DE97001381
  • Report No.: CONF-961113--11
  • Grant Number: AC05-96OR22464
  • Office of Scientific & Technical Information Report Number: 435336
  • Archival Resource Key: ark:/67531/metadc685445

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  • December 31, 1996

Added to The UNT Digital Library

  • July 25, 2015, 2:20 a.m.

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  • Jan. 19, 2016, 1:03 p.m.

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Barshick, S.-A.; Griest, W.H. & Vass, A.A. Electronic aroma detection technology for forensic and law enforcement applications, article, December 31, 1996; Tennessee. (digital.library.unt.edu/ark:/67531/metadc685445/: accessed September 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.