Phase-shift presaturation in one- and two-dimensional NMR experiments
A simple and efficient technique, called phase-shift presaturation, for solvent suppression in one-and two-dimensional NMR experiments is proposed and tested. The solvent signal can be considerably suppressed when the traditional presaturation technique is modified by a π/2 shift of the rf phase dur...
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Published in | Chemical physics letters Vol. 227; no. 6; pp. 645 - 650 |
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Main Authors | , |
Format | Journal Article |
Language | English |
Published |
Amsterdam
Elsevier B.V
01.09.1994
Elsevier Science |
Subjects | |
Online Access | Get full text |
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Summary: | A simple and efficient technique, called phase-shift presaturation, for solvent suppression in one-and two-dimensional NMR experiments is proposed and tested. The solvent signal can be considerably suppressed when the traditional presaturation technique is modified by a π/2 shift of the rf phase during low-power irradiation. The long pulse is thus divided into two periods. In the first period, which is much longer than the second one, first-order suppression is achieved, but some residual of the magnetization is spin-locked. The spin-locked components can, however, be largely suppressed in the second period with an orthogonal rf phase. |
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ISSN: | 0009-2614 1873-4448 |
DOI: | 10.1016/0009-2614(94)00862-0 |