Abstract
Three different strongly basic exchangers with similar co-ion uptake behavior have very different co-ion diffusion characteristics. Not only are there differences in the order of magnitude of the co-ion permeabilities P at the same external electrolyte concentration c, but also marked differences in the shape of the P-c curves, which can be interpreted in terms of the internal micro- structure of the (inhomogeneous)membrand. Other structural details can be elucidated from the fact that polyvalent co-ions are more strongly excluded from local regions of high counterion concentration than are monovalent co-ions, and so lead to different P-c relations. Furthermore there was observed, especially for polyvalent ions, a great difference between the mechanisms of steady-state through-diffusion and of transient diffusion out of a saturated membrane, which also permits interpretation in terms of internal structure. The details obtained by the mathematical analysis of the diffusion data agree with, and go considerably beyond, what can be ascertained by electron microscopy. (auth)
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.