A Novel Microfluidic Formaldehyde Microanalyser for Continuous Real-Time Monitoring in Indoor Air: Analytical Development and Validation

Autor: Claire Trocquet, Stéphane Le Calvé, Pierre Bernhardt
Přispěvatelé: Institut de chimie et procédés pour l'énergie, l'environnement et la santé (ICPEES), Université de Strasbourg (UNISTRA)-Matériaux et nanosciences d'Alsace (FMNGE), Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), In’Air Solutions [Strasbourg, France], ANR-11-ECOT-0013,CAPFEIN,réseau de CAPteurs de FormaldEhyde intelligents pour la surveillance de l'air INtérieur(2011), Université de Strasbourg (UNISTRA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Matériaux et Nanosciences Grand-Est (MNGE), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Le Calvé, Stéphane, Production durable et technologies de l'environnement - réseau de CAPteurs de FormaldEhyde intelligents pour la surveillance de l'air INtérieur - - CAPFEIN2011 - ANR-11-ECOT-0013 - ECOTECH - VALID
Rok vydání: 2017
Předmět:
[CHIM.ANAL] Chemical Sciences/Analytical chemistry
Indoor air
[SPI.NANO] Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics
Microfluidics
Formaldehyde
lcsh:A
ComputerApplications_COMPUTERSINOTHERSYSTEMS
02 engineering and technology
complex mixtures
01 natural sciences
chemistry.chemical_compound
[CHIM.ANAL]Chemical Sciences/Analytical chemistry
ComputerApplications_MISCELLANEOUS
[SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics
Process engineering
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean
Atmosphere
Pollutant
Hardware_MEMORYSTRUCTURES
[SDU.OCEAN] Sciences of the Universe [physics]/Ocean
Atmosphere
[SDE.IE]Environmental Sciences/Environmental Engineering
business.industry
010401 analytical chemistry
021001 nanoscience & nanotechnology
0104 chemical sciences
n/a
chemistry
ComputerSystemsOrganization_MISCELLANEOUS
Environmental science
[SDE.IE] Environmental Sciences/Environmental Engineering
lcsh:General Works
0210 nano-technology
business
Zdroj: Proceedings 2017, 1, 740; † Presented at the 5th International Symposium on Sensor Science
Proceedings 2017, 1, 740; † Presented at the 5th International Symposium on Sensor Science, 2017, ⟨10.3390/proceedings1080740⟩
Proceedings, Vol 1, Iss 8, p 740 (2017)
Popis: International audience; Formaldehyde is a major and harmful pollutant of indoor air due to its multiple sources and its carcinogenic effect. This work reports the development of a novel analytical method based on microfluidic technologies for the detection of low airborne Formaldehyde concentrations, representative of those found in indoor air, i.e., 10-100 µg m −3. The new analytical technique operates as follows: (1) gas sampling; (2) gaseous Formaldehyde uptake into the aqueous solution using an annular gas/liquid flow at room temperature; (3) derivatization reaction with acetylacetone solution at 65 °C producing 3,5-Diacetyl-1,4-dihydrolutidine (DDL) and (4) fluorimetric DDL detection. Laboratory experiments were performed to determine the experimental conditions permitting to obtain a stable annular flow, i.e., gas to liquid flow rate ratios greater than 1000. From liquid and gas calibrations, an uptake yield of 100% and a detection limit of 1 µg m −3 were determined. Finally, our portable instrument is fully controlled by homemade software and has a response time of 10 min, a temporal resolution of 2 s and an autonomy of 100 h with 100 mL reagent. Finally, this formaldehyde microanalyser was then deployed during several field campaigns and compared with the ISO 16000-3 reference method, i.e., the active sampling on DNPH cartridges.
Databáze: OpenAIRE
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