| Download | - View supplementary information: Development of formaldehyde flux sampler using a commercial DNPH cartridge (PDF, 1.6 MiB)
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| DOI | Resolve DOI: https://doi.org/10.1016/j.buildenv.2021.107795 |
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| Author | Search for: Won, Doyun1; Search for: Nong, Gang1; Search for: So, Stephanie1 |
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| Affiliation | - National Research Council Canada. Construction
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| Format | Text, Article |
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| Subject | formaldehyde; building materials; passive flux sampler; chamber test |
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| Abstract | 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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| Publication date | 2021-03-17 |
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| Publisher | Elsevier |
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| In | |
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| Language | English |
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| NRC number | NRC-CONST-56489E |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 43fff419-ef71-420f-9965-99ffd215302e |
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| Record created | 2021-08-10 |
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| Record modified | 2021-08-10 |
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