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Compact GC-QEPAS for On-Site Analysis of Chemical Threats
This paper reports on a compact, portable, and selective chemical sensor for hazardous vapors at trace levels, which is under development and validation within the EU project H2020 “RISEN”. Starting from the prototype developed for a previous EU project, here, we implemented an updated two-stage pur...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9824056/ https://www.ncbi.nlm.nih.gov/pubmed/36616868 http://dx.doi.org/10.3390/s23010270 |
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author | Liberatore, Nicola Viola, Roberto Mengali, Sandro Masini, Luca Zardi, Federico Elmi, Ivan Zampolli, Stefano |
author_facet | Liberatore, Nicola Viola, Roberto Mengali, Sandro Masini, Luca Zardi, Federico Elmi, Ivan Zampolli, Stefano |
author_sort | Liberatore, Nicola |
collection | PubMed |
description | This paper reports on a compact, portable, and selective chemical sensor for hazardous vapors at trace levels, which is under development and validation within the EU project H2020 “RISEN”. Starting from the prototype developed for a previous EU project, here, we implemented an updated two-stage purge and trap vapor pre-concentration system, a more compact MEMS- based fast gas-chromatographic separation module (Compact-GC), a new miniaturized quartz-enhanced photoacoustic spectroscopy (QEPAS) detector, and a new compact laser source. The system provides two-dimensional selectivity combining GC retention time and QEPAS spectral information and was specifically designed to be rugged, portable, suitable for on-site analysis of a crime scene, with accurate response in few minutes and in the presence of strong chemical background. The main upgrades of the sensor components and functional modules will be presented in detail, and test results with VOCs, simulants of hazardous chemical agents, and drug precursors will be reported and discussed. |
format | Online Article Text |
id | pubmed-9824056 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-98240562023-01-08 Compact GC-QEPAS for On-Site Analysis of Chemical Threats Liberatore, Nicola Viola, Roberto Mengali, Sandro Masini, Luca Zardi, Federico Elmi, Ivan Zampolli, Stefano Sensors (Basel) Article This paper reports on a compact, portable, and selective chemical sensor for hazardous vapors at trace levels, which is under development and validation within the EU project H2020 “RISEN”. Starting from the prototype developed for a previous EU project, here, we implemented an updated two-stage purge and trap vapor pre-concentration system, a more compact MEMS- based fast gas-chromatographic separation module (Compact-GC), a new miniaturized quartz-enhanced photoacoustic spectroscopy (QEPAS) detector, and a new compact laser source. The system provides two-dimensional selectivity combining GC retention time and QEPAS spectral information and was specifically designed to be rugged, portable, suitable for on-site analysis of a crime scene, with accurate response in few minutes and in the presence of strong chemical background. The main upgrades of the sensor components and functional modules will be presented in detail, and test results with VOCs, simulants of hazardous chemical agents, and drug precursors will be reported and discussed. MDPI 2022-12-27 /pmc/articles/PMC9824056/ /pubmed/36616868 http://dx.doi.org/10.3390/s23010270 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Liberatore, Nicola Viola, Roberto Mengali, Sandro Masini, Luca Zardi, Federico Elmi, Ivan Zampolli, Stefano Compact GC-QEPAS for On-Site Analysis of Chemical Threats |
title | Compact GC-QEPAS for On-Site Analysis of Chemical Threats |
title_full | Compact GC-QEPAS for On-Site Analysis of Chemical Threats |
title_fullStr | Compact GC-QEPAS for On-Site Analysis of Chemical Threats |
title_full_unstemmed | Compact GC-QEPAS for On-Site Analysis of Chemical Threats |
title_short | Compact GC-QEPAS for On-Site Analysis of Chemical Threats |
title_sort | compact gc-qepas for on-site analysis of chemical threats |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9824056/ https://www.ncbi.nlm.nih.gov/pubmed/36616868 http://dx.doi.org/10.3390/s23010270 |
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