![](/images/graphics-bg.png)
Ammonia Diffusion through Nalophan Double Bags: Effect of Concentration Gradient Reduction
Joint Authors
Sironi, Selena
Eusebio, Lidia
Capelli, Laura
Boiardi, Emanuela
Del Rosso, Renato
Source
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-11-23
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Medicine
Information Technology and Computer Science
Abstract EN
The ammonia loss through Nalophan bags has been studied.
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.
A diffusion model was used in order to study diffusion through the bag.
The study discusses the effect of concentration gradient ( Δ C ) across the polymeric membrane of the analyte.
The Δ C was controlled by using a setup bag called “double bags.” Experimental data show a reduction of ammonia percentage losses due to the effect of the external multibarrier.
The expedient of the double bag loaded with the same gas mixture allows a reduced diffusion of ammonia into the inner bag.
Comparing the inner bag losses with those of the single bag stored in the same conditions ( T , P , u ) and with equal geometrical characteristics ( S / V , z ), it was observed that the inner bag of the double bag displays a 16% loss while the single bag displays a 37% loss.
Acting on the Δ C it is possible to achieve a gross reduction of 57% in the ammonia leakage due to diffusion.
American Psychological Association (APA)
Sironi, Selena& Eusebio, Lidia& Capelli, Laura& Boiardi, Emanuela& Del Rosso, Renato. 2014. Ammonia Diffusion through Nalophan Double Bags: Effect of Concentration Gradient Reduction. The Scientific World Journal،Vol. 2014, no. 2014, pp.1-8.
https://search.emarefa.net/detail/BIM-1048758
Modern Language Association (MLA)
Sironi, Selena…[et al.]. Ammonia Diffusion through Nalophan Double Bags: Effect of Concentration Gradient Reduction. The Scientific World Journal No. 2014 (2014), pp.1-8.
https://search.emarefa.net/detail/BIM-1048758
American Medical Association (AMA)
Sironi, Selena& Eusebio, Lidia& Capelli, Laura& Boiardi, Emanuela& Del Rosso, Renato. Ammonia Diffusion through Nalophan Double Bags: Effect of Concentration Gradient Reduction. The Scientific World Journal. 2014. Vol. 2014, no. 2014, pp.1-8.
https://search.emarefa.net/detail/BIM-1048758
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1048758