Effects of polydimethylsiloxane (PDMS) on triacetone triperoxide (TATP) volatilization

Simon, Alison G.; Arsdale, Kelly Van; Wagner, Jarrad R.; Barrow, Jack

doi:10.1016/j.forc.2022.100413

Cited by 8 publications

(13 citation statements)

References 16 publications

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“…Results of the permeation, absorption, and longitudinal studies did not explore the effects of ab/adsorption to specific materials. PDMS was previously shown to affect the vapor pressure and enthalpy of volatilization of TATP [12], but the other materials in study have not yet been explored. Glass, tin, steel, various plastics, and their respective coatings will all interact with TATP molecules differently.…”

Section: Resultsmentioning

confidence: 99%

“…The current study evaluated various primary or inner containment systems for their efficacy in preventing odor permeation using the triacetone triperoxide (TATP) polymer odor capture-and-release (POCR) training aid as an example. The TATP POCR was chosen because it is a non-hazardous training aid with several published studies supporting its efficacy [7,[11][12][13][14]. TATP has a high-vapor pressure relative to other explosives and is therefore easily measured using the dynamic detection system direct analysis in real-time mass spectrometry (DART-MS) [12,14,15].…”

Section: Introductionmentioning

confidence: 99%

“…The TATP POCR was chosen because it is a non-hazardous training aid with several published studies supporting its efficacy [7,[11][12][13][14]. TATP has a high-vapor pressure relative to other explosives and is therefore easily measured using the dynamic detection system direct analysis in real-time mass spectrometry (DART-MS) [12,14,15]. Further, the effects of the matrix on TATP volatilization have been measured [12].…”

Section: Introductionmentioning

confidence: 99%

“…TATP has a high-vapor pressure relative to other explosives and is therefore easily measured using the dynamic detection system direct analysis in real-time mass spectrometry (DART-MS) [12,14,15]. Further, the effects of the matrix on TATP volatilization have been measured [12].…”

Section: Introductionmentioning

confidence: 99%

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Toward maintaining canine training aid integrity: Visualizing contamination and testing storage materials for a non‐hazardous canine training aid

Gauthier

Riley

Simon

2023

Journal of Forensic Sciences

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Contamination of canine training aids is a pervasive issue that may lead to incorrect canine discrimination of target odors. It is therefore important to properly store training materials to maintain their integrity and efficiency. First, this study demonstrated the potential for contamination using GloGerm™ as a proxy for odor/particulate transfer. Then, eight types of containers were evaluated to determine (1) the ability to prevent odor permeation and (2) the likelihood of maintaining the ab/adsorbed odor. Lastly, a longitudinal study evaluated how the permeation of the target odor changed over time. Analysis occurred using a direct analysis in real‐time mass spectrometer (DART‐MS) to detect triacetone triperoxide (TATP) from the non‐hazardous canine training aid known as the polymer odor capture‐and‐release (POCR) system. Results showed that Mylar and Opsak bags were most effective for short‐term storage, maintaining low levels of ab/adsorption. Over time, the amount of TATP permeating through the primary containers and collecting in a secondary container (i.e., outer packaging) increased at 1 week and decreased thereafter (up to 4 months). The amount of TATP collecting in the primary containers, however, increased up to 1 month and decreased thereafter.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Toward maintaining canine training aid integrity: Visualizing contamination and testing storage materials for a non‐hazardous canine training aid

Gauthier

Riley

Simon

2023

Journal of Forensic Sciences

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“…A polymer odor capture and release (POCR) canine training aid [12,13] was placed inside of a Mylar bag (Uline), often used as primary containment in canine training kits. Powdered GloGerm™ (40-45 mg) was added and the bag was gently agitated for approximately 10 s. Using clean gloves (see Materials and Methods), a single researcher removed the POCR from the Mylar bag with their right hand.…”

Section: Visualization With Glogerm™mentioning

confidence: 99%

Permeation of human scent through laboratory examination gloves

Gauthier

Riley

Simon

2022

Journal of Forensic Sciences

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It is generally accepted in the canine detection industry that a barrier (such as a glove) should be used between a human and evidence or canine training aids in order to prevent contamination and cross‐contamination as well as protect the handler from hazardous materials. However, no studies exist evaluating this assumption. Further, there is no published literature examining the different types of gloves for their utility in handling evidence or training materials used in canine detection work. This study was the first of its kind to address these gaps in the literature. First, GloGerm™ was used as a proxy for human scent and odor(s)/particulate(s) to visualize potential contamination. Then, three types of gloves (nitrile, two layers of nitrile, latex, and polyethylene) were tested for the permeation of human scent using furfural as a proof of concept, followed by pooled human sweat. Finally, the inherent odor of each glove type was identified. Two analytical techniques were used simultaneously as static and standoff dynamic detection systems, respectively: solid‐phase microextraction–gas chromatography–mass spectrometry (SPME–GC–MS) and direct analysis in real time‐mass spectrometry (DART‐MS). Using a double layer of nitrile gloves was the most effective in preventing furfural permeation from the analytical standard, while a single layer of nitrile prevented furfural from permeating from human sweat up to 2 h. Polyethylene gloves allowed the highest amount of furfural permeation but had no inherent odor detected. Headspace analysis detected two compounds for nitrile gloves and four compounds for latex gloves, but the nitrile compounds had a higher relative abundance.

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Analysis of non-hazardous canine training aids for triacetone triperoxide (TATP)

Simon

2022

Forensic Chemistry

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Effects of polydimethylsiloxane (PDMS) on triacetone triperoxide (TATP) volatilization

Cited by 8 publications

References 16 publications

Toward maintaining canine training aid integrity: Visualizing contamination and testing storage materials for a non‐hazardous canine training aid

Toward maintaining canine training aid integrity: Visualizing contamination and testing storage materials for a non‐hazardous canine training aid

Permeation of human scent through laboratory examination gloves

Analysis of non-hazardous canine training aids for triacetone triperoxide (TATP)

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