Diffusionszelle zur Bestimmung effektiver Diffusionskoeffizienten
โ Scribed by Marc New; Dr. Alfons Baiker; Prof. Dr. Werner Richarz
- Publisher
- John Wiley and Sons
- Year
- 1979
- Tongue
- German
- Weight
- 346 KB
- Volume
- 51
- Category
- Article
- ISSN
- 0009-286X
No coin nor oath required. For personal study only.
๐ SIMILAR VOLUMES
A method for determination of surface and bulk diffusion coefficients from measurements of optical density on thin slabs is discussed. In principle the spectral absorption of a substance diffusing from gaseous phase into the slab is measured as a function of time. The limitations of the method and t
## Abstract In a diffusion experiment a radioactively tagged substance diffuses into and through a membrane and is observed with a G. M. counter. The time lag __L__ associated with the approach to the steady counting rate is calculated. Although the diffusion problem has rather general boundary con
From sorption experiments as described by A. VAN TETS and Hs. H. GรNTHARD a time lag can be determined which is directly related to the diffusion coefficients __D__ and ๐ of the system investigated.