The methods of measurement of spatially resolved diffusion coefficients using radiofrequency field gradient (E. Mischler et al.,
Self-Diffusion Measurements by Carbon-13 NMR Using Radiofrequency Field Gradients
β Scribed by C. Malveau; B. Diter; F. Humbert; D. Canet
- Publisher
- Elsevier Science
- Year
- 1998
- Tongue
- English
- Weight
- 100 KB
- Volume
- 130
- Category
- Article
- ISSN
- 1090-7807
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β¦ Synopsis
This paper demonstrates the feasibility of self-diffusion measurements by radiofrequency field gradients with equipment tuned to the carbon-13 resonance frequency (i.e., 50 MHz for a field of 4.7 T). For the first time, self-diffusion coefficients of carbon disulfide and carbon tetrachloride are measured by NMR. The agreement with results from tracer methods is excellent. Copyright 1998 Academic Press. Copyright 1998 Academic Press
π SIMILAR VOLUMES
The two major advantages of experiments carried out with radiofrequency (RF) field-gradient NMR are the instrumental simplicity and the insensitivity to background static magnetic field gradients. These features combined with large RF gradients, which became available only recently, should make this
ΓBSTRACT
Transport in cellulose gels has been studied with ethylene glycol and crown ether (15-5) as "probes" using an NMR spin-echo technique. The cellulose content was varied in range 20-5570 (w/w). The retardation of diffusion was found to be adequately described by simple first-order expressions in conce