| Téléchargement | - Voir les données supplémentaires : Development of formaldehyde flux sampler using a commercial DNPH cartridge (PDF, 1.6 Mio)
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| DOI | Trouver le DOI : https://doi.org/10.1016/j.buildenv.2021.107795 |
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| Auteur | Rechercher : Won, Doyun1; Rechercher : Nong, Gang1; Rechercher : So, Stephanie1 |
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| Affiliation | - Conseil national de recherches du Canada. Construction
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| Format | Texte, Article |
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| Sujet | formaldehyde; building materials; passive flux sampler; chamber test |
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| Résumé | Building materials and consumer products are main sources of formaldehyde emitted in non-smoking environments. Identifying major emitters in existing buildings is difficult since the emission factors (EFs) are typically determined in a chamber test that is not suitable for on-site measurement. In this study, a new passive flux sampler (PFS) was developed for on-site measurement of formaldehyde EFs from building materials. The PFS is non-invasive and suitable for a long-term test (4–7 days) that is based on a commercially available 2,4-dinitrophenylhydrazine (DNPH) cartridge.
Five designs of PFS with different diffusion lengths and diameters were tested with 8 composite wood products (CWPs). The PFS with a diffusion length of 20 mm and a diameter of 10 mm (PFS-D1) was shown to have the EFs comparable to those from conventional chamber tests. Laboratory tests showed that the PFS-D1 has acceptable variability (<21% of relative standard deviation) and sensitivity that can collect mass above detection limit for 4–7 day sampling. The PFS-D1 was used to determine EFs of 5–9 CWPs in a research house at 3 and 8 months after construction. The EFs were used to predict the indoor formaldehyde concentration, which led to good agreement (±25%) with the measured concentration. The major emitters were determined to be CWPs such as floor and door, indicating that PFS-D1 is a useful tool to identify and prioritize formaldehyde sources in existing buildings. |
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| Date de publication | 2021-03-17 |
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| Maison d’édition | Elsevier |
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| Dans | |
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| Langue | anglais |
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| Numéro du CNRC | NRC-CONST-56489E |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | 43fff419-ef71-420f-9965-99ffd215302e |
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| Enregistrement créé | 2021-08-10 |
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| Enregistrement modifié | 2021-08-10 |
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