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Methode zur Bestimmung von Diffusionskoeffizienten in hochmolekularen, membranbildenden Diffusionsmedien II
Author(s) -
Marzetta B.,
Grün F.
Publication year - 1960
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.19600430415
Subject(s) - chemistry , diffusion , simple (philosophy) , time lag , lag , thermodynamics , chromatography , physics , computer network , philosophy , epistemology , computer science
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 conditions, L is obtained in a simple way by making appropriate use of the easily available asymptotic solution of the problem without having to resort to the explicit solution.