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Open AccessArticle

Near Real-Time Monitoring of Formaldehyde in a Low-Energy School Building

1
Université de Strasbourg, CNRS, ICPEES UMR 7515, F-67000 Strasbourg, France
2
In’Air Solutions, 25 rue Becquerel, 67000 Strasbourg, France
*
Author to whom correspondence should be addressed.
Atmosphere 2019, 10(12), 763; https://doi.org/10.3390/atmos10120763
Received: 18 October 2019 / Revised: 26 November 2019 / Accepted: 27 November 2019 / Published: 30 November 2019
(This article belongs to the Special Issue Green Buildings and Indoor Air Quality)
The emergence of new super-insulated buildings to reduce energy consumption places the quality of indoor air at the center of the debate. Among the indoor air pollutants, aldehydes are often present, and formaldehyde is of major interest regarding its multiple sources and its health impact. Therefore, French regulations expect to reduce formaldehyde concentrations below 10 μg m−3 in public buildings by 2023. Formaldehyde and other aldehydes were measured for two weeks during an intensive field campaign conducted in a school recently built and equipped with programmable dual-flow ventilation. Aldehydes were monitored with the ISO 16000-3 reference method based on sampling with 2,4-dinitrophenylhydrazine (DNPH) tubes while formaldehyde concentration was continuously measured by using a sensitive near real-time formaldehyde microanalyzer with a detection limit of 1 µg m−3. Formaldehyde was the major aldehyde. Its concentrations varied in the range of 2–25 µg m−3 and decreased by half when mechanical ventilation was ON, while the other ones were always below 5 µg m−3. In addition, an excellent agreement was observed between the different analytical techniques deployed to quantify formaldehyde levels. The microanalyzer was able to measure fast variations of formaldehyde concentration in the studied room, according to the building's ventilation periods.
Keywords: formaldehyde; aldehydes; microfluidic device; real-time measurements; field monitoring; indoor air; low-energy building formaldehyde; aldehydes; microfluidic device; real-time measurements; field monitoring; indoor air; low-energy building
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MDPI and ACS Style

Trocquet, C.; Bernhardt, P.; Guglielmino, M.; Malandain, I.; Liaud, C.; Englaro, S.; Calvé, S.L. Near Real-Time Monitoring of Formaldehyde in a Low-Energy School Building. Atmosphere 2019, 10, 763.

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