Title

Covariance Mapping In The Analysis Of Ignitable Liquids By Gas Chromatography/Mass Spectrometry

Abstract

The covariance matrix computed from the retention time-ion abundance data matrix from gas chromatography/mass spectrometry analysis of ignitable liquids is shown to be a useful tool for automated identification of ignitable liquids in a database. The absolute value of the element-by-element difference between two normalized covariance matrices is shown to quantitatively differentiate between ignitable liquids composed of complex mixtures of hydrocarbons and is amenable to automated searching of ignitable liquid databases. The covariance mapping method is applied to a matrix-contaminated postburn sample, allowing the determination of a high degree of similarity between the ignitable liquid and a heavily evaporated gasoline. © 2006 American Chemical Society.

Publication Date

3-1-2006

Publication Title

Analytical Chemistry

Volume

78

Issue

5

Number of Pages

1713-1718

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1021/ac058040e

Socpus ID

33644745253 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/33644745253

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