Cryofocusing capillary microextraction of volatiles (Cryo-CMV) as a novel headspace extraction device for the analysis of volatile organic compounds and smokeless powders

Tarifa, Anamary; Kreitals, Natasha M.; Mulloor, Jerome; Gura, Sigalit; Almirall, José R.

doi:10.1016/j.forc.2017.02.007

Cited by 7 publications

(3 citation statements)

References 22 publications

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“…Total Vaporization‐SPME (TV‐SPME) GC/MS has been used for the quantification of SP residues in real post‐blast debris samples from both PVC and steel IEDs [16,17]. Cryofocusing capillary microextraction has been paired with GC/MS as a HS extraction device for qualitative analysis of intact SPs [18]. Other techniques like HS‐SPME IMS [4], online SPE‐QqQ‐MS [19], FTIR‐photoacoustic detection [3], CE [9], and TLC [9] have also been used to analyze intact SPs.…”

Section: Introductionmentioning

confidence: 99%

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Quantitative analysis of smokeless powder particles in post‐blast debris via gas chromatography/vacuum ultraviolet spectroscopy (GC/VUV)

Reavis

Goodpaster

2022

Journal of Forensic Sciences

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Forensic analysis of smokeless powder particles recovered from the debris of an improvised explosive device can provide information about the type of smokeless powder used and can aid investigation efforts. In this study, quantitative methods were used to yield information about the difference in the chemical composition of the particles pre‐ and post‐blast. The technique, gas chromatography/vacuum ultraviolet spectroscopy (GC/VUV), was able to quantify nitroglycerin, 2,4‐dinitrotoluene, diphenylamine, ethyl centralite, and di‐n‐butyl phthalate in pre‐ and post‐blast smokeless powder particles using heptadecane as an internal standard. Post‐blast debris was obtained via controlled explosions with assistance from the Indiana State Police Bomb Squad. Two galvanized steel and two polyvinyl chloride pipe bombs were assembled. Two devices contained single‐base smokeless powder and two contained double‐base smokeless powder. 2,4‐dinitrotoluene and diphenylamine were successfully quantified in the single‐base smokeless powder post‐blast debris while nitroglycerin, diphenylamine, and ethyl centralite were successfully quantified in the double‐base smokeless powder post‐blast debris. Compounds were detected at concentrations as low as 9 μg of 2,4‐dinitrotoluene per mg, <3 μg of diphenylamine per mg, 131 μg of nitroglycerin per mg, and <3 μg of ethyl centralite per mg. Concentration changes between pre‐ and post‐blast smokeless powder particles were determined as well as microscopic differences between pre‐ and post‐blast debris for both smokeless powders in all devices. To our knowledge, this is the first use of GC/VUV for the quantification of explosives.

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Section: Introductionmentioning

confidence: 99%

“…Cryofocusing capillary microextraction has been paired with GC/MS as a HS extraction device for qualitative analysis of intact SPs [18].…”

Section: Introductionmentioning

confidence: 99%

Quantitative analysis of smokeless powder particles in post‐blast debris via gas chromatography/vacuum ultraviolet spectroscopy (GC/VUV)

Reavis

Goodpaster

2022

Journal of Forensic Sciences

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“…Sampling was performed at 0.2 L/min for 10 minutes for a total of 2 L of air sampled. These parameters were selected on the basis of the results of previous experiments using the CMV for extracting volatiles in ambient air [92,97]. Immediately after pumping, the CMVs were placed in the thermal desorption probe and inserted into the GC inlet for analysis.…”

Section: Methodsmentioning

confidence: 99%

Predicting the Geographic Origin of Heroin by Multivariate Analysis of Elemental Composition and Strontium Isotope Ratios

DeBord¹

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Capillary microextraction of volatiles device for enhanced BTEX vapors sampling based on a phenyl modified PDMS sol-gel adsorption phase

Gura

Tarifa

Mulloor

et al. 2018

Analytica Chimica Acta

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Cryofocusing capillary microextraction of volatiles (Cryo-CMV) as a novel headspace extraction device for the analysis of volatile organic compounds and smokeless powders

Cited by 7 publications

References 22 publications

Quantitative analysis of smokeless powder particles in post‐blast debris via gas chromatography/vacuum ultraviolet spectroscopy (GC/VUV)

Quantitative analysis of smokeless powder particles in post‐blast debris via gas chromatography/vacuum ultraviolet spectroscopy (GC/VUV)

Predicting the Geographic Origin of Heroin by Multivariate Analysis of Elemental Composition and Strontium Isotope Ratios

Capillary microextraction of volatiles device for enhanced BTEX vapors sampling based on a phenyl modified PDMS sol-gel adsorption phase

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