Experiments that selectively excite I ؍ 3 2 nuclei exhibiting residual quadrupolar splittings are used to acquire 23 Na NMR spectra from a range of biologically relevant samples containing sodium in ordered environments. Three complementary approaches to the analysis of such spectra are described:
In Vivo NMR of Sodium Ions in Ordered Environments
✍ Scribed by R. Kempharper; S.P. Brown; P. Styles; S. Wimperis
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 431 KB
- Volume
- 105
- Category
- Article
- ISSN
- 1064-1866
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## Abstract A new method for selectively detecting sodium ions in anisotropic environments is presented. A spin‐lock (SL) sequence, followed by a coherence transfer pulse, generates rank‐two zero‐quantum coherences, and converts them into observable transverse magnetization. The quadrupolar polariz
Recent 23 Na NMR studies have shown that sodium ions ordered sodium ions. Owing to the absence of inhomogeneous quadrupolar broadening and the relative inefficiency exhibiting residual quadrupolar splittings occur in a wide variety of human and animal tissues, including brain (1, 2), of the homogene