skip navigation


Register for Latest Research

Stay Informed
Register with NCJRS to receive NCJRS's biweekly e-newsletter JUSTINFO and additional periodic emails from NCJRS and the NCJRS federal sponsors that highlight the latest research published or sponsored by the Office of Justice Programs.

NCJRS Abstract

The document referenced below is part of the NCJRS Virtual Library collection. To conduct further searches of the collection, visit the Virtual Library. See the Obtain Documents page for direction on how to access resources online, via mail, through interlibrary loans, or in a local library.


NCJ Number: 229703 Find in a Library
Title: Detection and Classification of Ignitable Liquid Residues Using a Fluorescence-Based Vapor-Sensitive Microsphere Array
Journal: Journal of Forensic Sciences  Volume:55  Issue:1  Dated:January 2010  Pages:178-184
Author(s): Matthew J. Aernecke, Ph.D.; David R. Walt, Ph.D.
Date Published: January 2010
Page Count: 7
Type: Report (Study/Research)
Format: Article
Language: English
Country: United States of America
Annotation: This paper describes the application of microsphere vapor sensing arrays to the detection of ignitable liquid (IL) vapors as both pure vapors and as residues (ILRs) on simulated fire debris samples.
Abstract: The temporal fluorescence response profile of the microsphere array generated a reproducible pattern unique to each analyte that could be used to classify subsequent sensor responses. This system, together with a support vector machine pattern recognition algorithm, was used to address several different IL and ILR classification scenarios. High classification accuracy (98 percent) was maintained over more than 200 vapor responses, and the array was able to identify ILs when presented to the pattern classification algorithm within a dataset containing 11 other volatile compounds. Both burned and unburned IL treated samples were classified correctly greater than 97 percent of the time. These results indicate that microsphere vapor may be useful for the rapid identification of ILs and ILRs. 5 tables, 2 figures, and 32 references (Published abstract)
Main Term(s): Criminology
Index Term(s): Arson; Arson investigations; Forensic sciences; Investigative techniques
Note: This work has been presented in part at the 2008 Pittsburgh Conference, March 2-6, 2008, in New Orleans, LA, and the 35th Northeast Regional Meeting of the American Chemical Society, June 29-July 2, 2008, in Burlington, VT.
To cite this abstract, use the following link:

*A link to the full-text document is provided whenever possible. For documents not available online, a link to the publisher's website is provided. Tell us how you use the NCJRS Library and Abstracts Database - send us your feedback.