Detection Technique – NMR

Detection Technique – NMR

n  Doesn't depend on separation

n  Relatively insensitive

n  NMR spectra difficult for interpretation

n  Robust Method

n  Highly reproducable

NMR Experiment

n  A current through (green)

n  generates a strong magnetic field

n   polarizes the nuclei in the sample material (red).

n   It is surrounded by the r.f. coil (black)‏

n   delivers the computer generated r.f. tunes that initiate the nuclear quantum dance.

n   At some point in time, the switch is turned and now the dance is recorded through the voltage it induces.

n   the NMR signal, in the r.f. coil.

The signals Fourier transform (FT) shows "lines" for different nuclei in different electronic environments.