Preparation of glass sampling containers to determine trace amounts of accelerants in fire samples

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00007064%3AK02__%2F24%3AN0000042" target="_blank" >RIV/00007064:K02__/24:N0000042 - isvavai.cz</a>

Výsledek na webu

<a href="https://link.springer.com/chapter/10.1007/978-3-031-59177-8_12" target="_blank" >https://link.springer.com/chapter/10.1007/978-3-031-59177-8_12</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/978-3-031-59177-8_12" target="_blank" >10.1007/978-3-031-59177-8_12</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Preparation of glass sampling containers to determine trace amounts of accelerants in fire samples

Popis výsledku v původním jazyce

Gas chromatography is be used to prove the presence of small amounts of organ-ics trapped on solid samples or in liquid samples from fires and it serves as evi-dence of the presence of traces of flammable liquids used as substances that sup-port combustion (fire accelerants). Demonstrating the presence of traces of gaso-line or diesel fuel can significantly support the hypothesis that a fire was started intentionally. Recently, with the development of gas chromatography instrumen-tation, the sensitivity of the measurement increases and it is possible to measure lower concentrations. Therefore, it is important to collect the sample correctly, use clean sample containers, collection tools and equipment and prevent contamina-tion of the sample during transport to the laboratory. This places increased de-mands on the quality of the collected samples and their packaging – sample con-tainers. The contribution deals with the testing of the cleanness of glass sample containers and suggests their cleaning procedures so that their contaminants do not affect the determination of the presence of traces of gasoline or diesel in sam-ples from the fire scene. Gas chromatography with mass spectrometry and solid phase micro extraction (GCMS-SPME) was used to detect contamination in new preserving jar with TWIST OFF caps. By testing different types of lids from dif-ferent manufacturers it was found that all of them are already contaminated with similar substances to varying degrees. Various methods of cleaning were tried, namely burning, using sorbent materials and cleaning with solvents. Based on these results, a procedure for their cleaning was proposed.

Název v anglickém jazyce

Preparation of glass sampling containers to determine trace amounts of accelerants in fire samples

Popis výsledku anglicky

Gas chromatography is be used to prove the presence of small amounts of organ-ics trapped on solid samples or in liquid samples from fires and it serves as evi-dence of the presence of traces of flammable liquids used as substances that sup-port combustion (fire accelerants). Demonstrating the presence of traces of gaso-line or diesel fuel can significantly support the hypothesis that a fire was started intentionally. Recently, with the development of gas chromatography instrumen-tation, the sensitivity of the measurement increases and it is possible to measure lower concentrations. Therefore, it is important to collect the sample correctly, use clean sample containers, collection tools and equipment and prevent contamina-tion of the sample during transport to the laboratory. This places increased de-mands on the quality of the collected samples and their packaging – sample con-tainers. The contribution deals with the testing of the cleanness of glass sample containers and suggests their cleaning procedures so that their contaminants do not affect the determination of the presence of traces of gasoline or diesel in sam-ples from the fire scene. Gas chromatography with mass spectrometry and solid phase micro extraction (GCMS-SPME) was used to detect contamination in new preserving jar with TWIST OFF caps. By testing different types of lids from dif-ferent manufacturers it was found that all of them are already contaminated with similar substances to varying degrees. Various methods of cleaning were tried, namely burning, using sorbent materials and cleaning with solvents. Based on these results, a procedure for their cleaning was proposed.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

10406 - Analytical chemistry

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název statě ve sborníku

Wood & Fire Safety 2024

ISBN

978-3-031-59177-8

ISSN

—

e-ISSN

—

Počet stran výsledku

7

Strana od-do

99–105

Název nakladatele

Springer Cham

Místo vydání

Cham, Switzerland

Místo konání akce

Štrbské Pleso, Slovensko

Datum konání akce

12. 5. 2024

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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