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NCJRS Abstract

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1 record(s) found

 

NCJ Number: 187621 Find in a Library
Title: Absorption of Ignitable Liquids Into Polyethylene/Polyvinylidine Dichloride Bags
Journal: Journal of Forensic Sciences  Volume:46  Issue:2  Dated:March 2001  Pages:356-362
Author(s): Maureen J. Kocisko M.F.S
Date Published: March 2001
Annotation: This Australian study tested Cryovac and Globus brand polyethylene/polyvinylidine dichloride bags for their suitability in storing ignitable liquid evidence.
Abstract: The Queensland Police Service and other forensic laboratories in Australia use Cryovac and Globus brand bags to hold evidence that requires ignitable liquid testing. Both manufacturers specify that these bags are made from multi-layer co-extruded polyethylene/polyvinylidine dichloride. In the current study, standards of diesel, kerosene, and gasoline were placed in the bags and sampled by passive headspace adsorption. The bags were then heated to determine whether absorbed components of the standards could be released upon heating. Recovered extracts were analyzed by gas chromatography and gas chromatography mass spectrometry. These bags were found to absorb components of diesel, kerosene, and gasoline and were also found to produce interfering by products that obstruct the chromatographic results. This study shows that the brands of clear plastic bags customarily used in Australian laboratories are unreliable containers for ignitable liquid evidence. Each type of evidence container must be tested to determine whether they affect the analysis of ignitable liquids. 5 figures and 4 references
Main Term(s): Police policies and procedures
Index Term(s): Australia; Evidence collection; Evidence preservation; Evidence technicians; Investigative techniques
Page Count: 7
Format: Article
Type: Report (Study/Research)
Language: English
Country: United States of America
To cite this abstract, use the following link:
http://www.ncjrs.gov/App/publications/abstract.aspx?ID=187621

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