Skip to Main content Skip to Navigation
Journal articles

Ammonia Diffusion Phenomena through NalophanTM Bags Used for Olfactometric Analyses

Abstract : The ammonia loss through NalophanTM bags has been studied. Ammonia was chosen as target compound in order to be representative of odorous molecules of small dimensions. The losses observed for storage conditions and times as allowed by the reference standard for dynamic olfactometry (EN 13725:2003) indicate that odour concentration values due to the presence of small molecules may be significantly underestimated if samples are not analysed immediately after sampling. The diffusion coefficient of ammonia through the NalophanTM film was evaluated using the Fick's law, and it turned out to be equal to 2.38E−12 (m 2 /s). The results and their theoretical interpretation indicate that concentration losses due to ammonia diffusion through the NalophanTM film can be decreased by using large bags and filling them up to their maximum capacity.
Document type :
Journal articles
Complete list of metadatas

Cited literature [37 references]  Display  Hide  Download

https://hal.mines-ales.fr/hal-02914562
Contributor : Administrateur Imt - Mines Alès <>
Submitted on : Wednesday, August 12, 2020 - 8:25:31 AM
Last modification on : Friday, August 14, 2020 - 3:07:04 AM

File

2014_JEP_NH3-difus-phen-throug...
Publisher files allowed on an open archive

Identifiers

Citation

Selena Sironi, Lidia Eusebio, Laura Capelli, Emanuela Boiardi, Renato del Rosso, et al.. Ammonia Diffusion Phenomena through NalophanTM Bags Used for Olfactometric Analyses. Journal of Environmental Protection, Scientific Research Publishing, 2014, 5, pp.949 - 961. ⟨10.4236/jep.2014.511096⟩. ⟨hal-02914562⟩

Share

Metrics

Record views

40

Files downloads

16