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Effect of Substrate Interferences from High‐Density Polyethylene on Association of Simulated Ignitable Liquid Residues with the Corresponding Liquid
Author(s) -
Prather Kaitlin R.,
Towner Suzanne E.,
McGuffin Victoria L.,
Waddell Smith Ruth
Publication year - 2014
Publication title -
journal of forensic sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.715
H-Index - 96
eISSN - 1556-4029
pISSN - 0022-1198
DOI - 10.1111/1556-4029.12305
Subject(s) - high density polyethylene , chromatography , gasoline , polyethylene , materials science , mass spectrometry , substrate (aquarium) , analytical chemistry (journal) , residue (chemistry) , liquid fuel , chemistry , composite material , organic chemistry , oceanography , geology , combustion
The effect of substrate interferences from high‐density polyethylene ( HDPE ) on the ability to associate an ignitable liquid residue with the corresponding liquid standard, using statistical procedures, is demonstrated. Gasoline, kerosene, and lighter fluid, at three different evaporation levels, were spiked onto HDPE and subsequently burned to generate simulated ignitable liquid residues ( ILR s). Samples were extracted using a passive headspace procedure and analyzed by gas chromatography–mass spectrometry. The total ion chromatograms were subjected to data pretreatment procedures prior to principal components analysis and Pearson product moment correlation. Using the combination of these statistical procedures, simulated ILR s were successfully associated with the corresponding liquid type, despite the presence of compounds inherent to the HDPE substrate, as well as those resulting from pyrolysis of the substrate.