Influence of external factors on recovery and persistence parameters of chemical weapons-related alcohols and thiols in concrete samples
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60162694%3AG42__%2F26%3A00563909" target="_blank" >RIV/60162694:G42__/26:00563909 - isvavai.cz</a>
Result on the web
<a href="https://analyticalsciencejournals.onlinelibrary.wiley.com/doi/10.1002/dta.3833" target="_blank" >https://analyticalsciencejournals.onlinelibrary.wiley.com/doi/10.1002/dta.3833</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/dta.3833" target="_blank" >10.1002/dta.3833</a>
Alternative languages
Result language
angličtina
Original language name
Influence of external factors on recovery and persistence parameters of chemical weapons-related alcohols and thiols in concrete samples
Original language description
The contamination of materials in urban areas by chemical weapons is a critical issue, especially as these materials can serve as key evidence in forensic investigations. Concrete, commonly found in urban environments, is highly porous and can retain chemical residues. However, its alkaline nature accelerates the degradation of chemical warfare agents, complicating the recovery of usable evidence. This study explores the recovery and persistence of alcohols and thiols, final degradation products of nerve and blistering agents, from two types of concrete matrices: lightweight concrete formworks and dense, steel-reinforced concrete blocks. Using an optimized method, uncrushed concrete fragments (up to 85 g) were extracted with acetone, monitoring two critical parameters: apparent recovery and persistence. The influence of external conditions, such as water addition, temperatures between 5°C and 35°C, and varying airflow speeds (1.7–5.1 m·s-1), was systematically evaluated. Reference conditions involved dried concrete at 22°C with no airflow. The findings revealed that alcohol recovery aligned with the volatility of the compounds, with denser concrete exhibiting lower recoveries but greater persistence. Thiols quickly converted to disulfides. Notably, temperature and moisture had the most profound effects on the recovery and persistence of the chemicals. These results highlight the importance of considering environmental factors when assessing chemical warfare agents and their degradation products in concrete, offering insights relevant to forensic science, environmental safety, and military defense. The study demonstrates how concrete's properties and external conditions can alter the forensic traceability of chemical contaminants.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10406 - Analytical chemistry
Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
DRUG TESTING AND ANALYSIS
ISSN
1942-7603
e-ISSN
1942-7611
Volume of the periodical
17
Issue of the periodical within the volume
8
Country of publishing house
GB - UNITED KINGDOM
Number of pages
14
Pages from-to
1269-1282
UT code for WoS article
001367457200001
EID of the result in the Scopus database
2-s2.0-85210756994