Evaluation of different sampling media for their potential use as a combined swab for the collection of bothe organic and inorganic explosive residues

Nopporn Song-Im, Sarah Benson, Christopher Lennard

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

Commercially available skin cleansing alcohol wipes and conventional swabs were investigated for their use as a universal sampling medium for the simultaneous collection of both organic and inorganic explosive residues. Six compounds with the potential to be encountered in casework [pentaerythritol tetranitrate (PETN), 2,4,6-trinitrotoluene (TNT), hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX), triacetone triperoxide (TATP), ammonium nitrate, and sodium chlorate] were selected as representative target compounds. Quantities of these target compounds were deposited on four different substrates (glass, plastic, aluminium foil and laminate). Two chosen alcohol wipes demonstrated better overall performance in the recovery of both the organic and inorganic representative compounds from each of the test surfaces compared to the results obtained using conventional cotton and polyester swabs, pre-moistened with various solvents, and a direct methanol wash (used as a control). Results obtained using dry cotton swabs indicated that it was not an effective swabbing system for the collection of both organic and inorganic explosive residues on common substrates
Original languageEnglish
Pages (from-to)102-110
Number of pages9
JournalForensic Science International
Volume222
Issue number1-3
DOIs
Publication statusPublished - 2012

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