Determination of individual biogenic volatile organic compounds in the atmosphere at short time intervals by a combination of in-situ continuous sampling using wet diffusion denuder and off-line laboratory analysis
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26310%2F26%3A0200533" target="_blank" >RIV/00216305:26310/26:0200533 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1016/j.aca.2025.345002" target="_blank" >https://doi.org/10.1016/j.aca.2025.345002</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.aca.2025.345002" target="_blank" >10.1016/j.aca.2025.345002</a>
Alternative languages
Result language
angličtina
Original language name
Determination of individual biogenic volatile organic compounds in the atmosphere at short time intervals by a combination of in-situ continuous sampling using wet diffusion denuder and off-line laboratory analysis
Original language description
Background: Biogenic volatile organic compounds (BVOCs) play a key role in atmospheric chemistry and air quality. Accurate quantification of individual BVOCs remains challenging due to their volatility and reactivity in atmosphere. In this study, a wet diffusion denuder used for the continuous sampling of BVOCs into an absorption liquid was evaluated under controlled laboratory conditions in order to determine the collection efficiencies for a large number of BVOCs. All samples with collected BVOCs were offline analysed using gas chromatography with mass spectrometry. Results: The influence of denuder temperature, air flow rate, relative humidity, type of absorption liquid, and liquid flow rate was systematically investigated. Optimal conditions for field application were selected as a denuder temperature of 20 degrees C, an air flow rate of 500 mL/min, n-heptane as the absorption liquid, and a liquid flow rate of 0.40 mL/min. Under these conditions, collection efficiencies for most BVOCs exceeded 89 %. Field sampling conducted at two contrasting sites, an agricultural location and a spruce forest, confirmed the applicability of the method and highlighted large differences in monoterpene concentrations between environments. A connection of denuder output with automatic sample collector enables long-term fully automatic sampling of BVOCs in the air at short time intervals. The temporal resolution sampling allows the study of rapid changes in BVOC concentrations in the air. Significance: A key advantage of the method is that it minimizes the exposure of captured BVOCs in an absorption liquid (n-heptane) to airborne oxidants, thereby reducing the risk of photochemical reaction with air oxidants during sampling, and also the determination of the concentration of individual BVOCs using off-line gas chro-matography with mass spectrometry analysis.
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
2026
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Analytica Chimica Acta
ISSN
0003-2670
e-ISSN
1873-4324
Volume of the periodical
1385
Issue of the periodical within the volume
1 February 2026
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
8
Pages from-to
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UT code for WoS article
001639948000001
EID of the result in the Scopus database
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