| Literature DB >> 14987594 |
L A Rijniers1, P C M M Magusin, H P Huinink, L Pel, K Kopinga.
Abstract
The NMR relaxation of hydrogen nuclei of a fluid in a porous material is generally interpreted in terms of the Brownstein-Tarr model, in which the relaxation rate of the signal is inversely proportional to the pore size. We have investigated whether this model can be applied to the relaxation of Na nuclei in a NaCl solution in a porous material. The results indicate that the ion distribution over the pores can be obtained from an analysis of the Na NMR signal decay, if the pore sizes are roughly below 1 microm. This information is very useful for studies of combined moisture and ion transport in porous building materials.Entities:
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Year: 2004 PMID： 14987594 DOI： 10.1016/j.jmr.2003.11.008
Source DB: PubMed Journal: J Magn Reson ISSN： 1090-7807 Impact factor: 2.229