Disposable Rubber Gloves as Evidence Samples After Chemical Attack with Nerve Agents

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60162694%3AG45__%2F23%3A00558288" target="_blank" >RIV/60162694:G45__/23:00558288 - isvavai.cz</a>

Výsledek na webu

<a href="https://isc2022.hu/programme/index.php#posters" target="_blank" >https://isc2022.hu/programme/index.php#posters</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Disposable Rubber Gloves as Evidence Samples After Chemical Attack with Nerve Agents

Popis výsledku v původním jazyce

Videos made after the chemical attacks in Syria show that medical teams did not wear any protective gear, except for sporadic use of single-use gloves and surgical masks. Single-use gloves do not provide sufficient protection for the wearer, however, it has not yet been studied whether they can be used as samples to confirm an attack by chemical weapons. The military mobile laboratory is a preforensic team that can be deployed quickly to identify toxic substances in various samples. In the study, 3 types of disposable gloves were studied as samples - nitrile, latex and vinyl. The contaminants were the nerve agent sarin (GB) and soman (GD). Six standard solvents used in deployable laboratories were used as extractants. The optimal extraction method and extraction time were monitored. Furthermore, the extraction efficiency of individual solvents was studied, as well as the extraction of other substances from the matrix, which would interfere in the chromatogram. The time after contamination, for which the analyte can still be found in the sample, was observed. The outputs show different results for each material, as well as for different extractants and contaminants. In latex gloves, it was possible to detect GD using 5 solvents up to 480 min after contamination (GB 30 min). The best extractants for nitrile gloves was acetone, which extracted GD up to 11 days after contamination (GB 480 min). For vinyl gloves, GD could be traced in the sample 3 days after contamination using acetone (GB 180 min, hexane and acetone). The optimal extractants were selected after considering several parameters affecting the analysis. Finally, a sampling scenario was simulated. The sampling team collected the sample according to their SOP 2 days after the incident and the effect of handling and packaging on the subsequent laboratory analysis was observed.

Název v anglickém jazyce

Disposable Rubber Gloves as Evidence Samples After Chemical Attack with Nerve Agents

Popis výsledku anglicky

Videos made after the chemical attacks in Syria show that medical teams did not wear any protective gear, except for sporadic use of single-use gloves and surgical masks. Single-use gloves do not provide sufficient protection for the wearer, however, it has not yet been studied whether they can be used as samples to confirm an attack by chemical weapons. The military mobile laboratory is a preforensic team that can be deployed quickly to identify toxic substances in various samples. In the study, 3 types of disposable gloves were studied as samples - nitrile, latex and vinyl. The contaminants were the nerve agent sarin (GB) and soman (GD). Six standard solvents used in deployable laboratories were used as extractants. The optimal extraction method and extraction time were monitored. Furthermore, the extraction efficiency of individual solvents was studied, as well as the extraction of other substances from the matrix, which would interfere in the chromatogram. The time after contamination, for which the analyte can still be found in the sample, was observed. The outputs show different results for each material, as well as for different extractants and contaminants. In latex gloves, it was possible to detect GD using 5 solvents up to 480 min after contamination (GB 30 min). The best extractants for nitrile gloves was acetone, which extracted GD up to 11 days after contamination (GB 480 min). For vinyl gloves, GD could be traced in the sample 3 days after contamination using acetone (GB 180 min, hexane and acetone). The optimal extractants were selected after considering several parameters affecting the analysis. Finally, a sampling scenario was simulated. The sampling team collected the sample according to their SOP 2 days after the incident and the effect of handling and packaging on the subsequent laboratory analysis was observed.

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

10406 - Analytical chemistry

Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů