Shaw, Marvin David orcid.org/0000-0001-9954-243X and Lewis, Alastair orcid.org/0000-0002-4075-3651 (2021) On-line solid phase microextraction derivatization for the sensitive determination of multi-oxygenated volatile compounds in air. Atmospheric Measurement Techniques. pp. 4989-4999. ISSN 1867-8548
Abstract
Multi-oxygenated volatile organic compounds are important markers of air pollution and precursors of ozone and secondary aerosols in both polluted and remote environments. Herein, their accurate determination was enhanced. The approach was based on an automated system for active sampling and on-fibre derivatization coupled with the gas chromatography–mass spectrometry (GC–MS) technique. The method capability was determined for different compound families, such as aldehydes, ketones, α-dicarbonyls, hydroxy-aldehydes, hydroxy-ketones, and carboxylic acids. A good accuracy (<7 %) was demonstrated from the results compared to Fourier-transform infrared spectroscopy (FTIR). Limits of detection (LODs) of 6–100 pptV were achieved with a time resolution lower than 20 min. The developed method was successfully applied to the determination of multi-oxygenated compounds in air samples collected during an intercomparison campaign (EUROCHAMP-2020 project). Also, its capability and accuracy for atmospheric monitoring was demonstrated in an isoprene ozonolysis experiment. Both were carried out in the high-volume outdoor atmospheric simulation chambers (EUPHORE, 200 m3). In summary, our developed technique offers near-real-time monitoring with direct sampling, which is an advantage in terms of handling and labour time for a proper quantification of trace levels of atmospheric multi-oxygenated compounds.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © Author(s) 2021. |
Dates: |
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Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Chemistry (York) |
Depositing User: | Pure (York) |
Date Deposited: | 27 Jul 2021 15:00 |
Last Modified: | 16 Oct 2024 17:43 |
Published Version: | https://doi.org/10.5194/amt-14-4989-2021 |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.5194/amt-14-4989-2021 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:176577 |