Controlled Odor Mimic Permeation Systems for Olfactory Training and Field Testing

DeGreeff, Lauryn E.; Simon, Alison G.; Macias, Michael S.; Holness, H.; Furton, Kenneth G.

doi:10.3791/60846-v

Cited by 1 publication

(2 citation statements)

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“…The level of permeation through the poly seal bags and the Ziploc® bags was also expected, given that these bags are made of polyethylene and polypropylene. Such materials have been used for controlled odor permeation in previous studies [4][5][6].…”

Section: Primary Containment Permeation Testingmentioning

confidence: 99%

“…For example, Macias et al used low-density polyethylene (LDPE) bags to regulate the permeation of odor through the bags for use in canine trials [4]. Other studies used a similar approach by varying the thicknesses of the LDPE bags to regulate permeation rate of odor [5,6]. The first of these created different rates of odor permeation for a single compound and then matched permeation rates between different compounds [5].…”

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: Primary Containment Permeation Testingmentioning

confidence: 99%