Cargando…

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...

Descripción completa

Detalles Bibliográficos
Autores principales: Liberatore, Nicola, Viola, Roberto, Mengali, Sandro, Masini, Luca, Zardi, Federico, Elmi, Ivan, Zampolli, Stefano
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
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
_version_ 1784866315057496064
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
work_keys_str_mv AT liberatorenicola compactgcqepasforonsiteanalysisofchemicalthreats
AT violaroberto compactgcqepasforonsiteanalysisofchemicalthreats
AT mengalisandro compactgcqepasforonsiteanalysisofchemicalthreats
AT masiniluca compactgcqepasforonsiteanalysisofchemicalthreats
AT zardifederico compactgcqepasforonsiteanalysisofchemicalthreats
AT elmiivan compactgcqepasforonsiteanalysisofchemicalthreats
AT zampollistefano compactgcqepasforonsiteanalysisofchemicalthreats