Methods for peak assignment in low-resolution multidimensional NMR cross-correlation relaxometry.
Several NMR protocols are presented for assigning peaks in complex T1-T2 spectra, including the effects of varying the spectrometer frequency and the CPMG pulsing rate. Extensions into a third dimension based on chemical-shift; diffusion- and field-cycled weighted T1-T2 cross-correlation methods are also explored as a means of peak assignment. We illustrate the power of these novel techniques with reference to simple aqueous sucrose solutions, but the methodology should be generally applicable.
Marigheto
N
N
Institute of Food Research, Norwich Research Park, Colney, Norwich, UK.
Venturi
L
L
Hibberd
D
D
Wright
K M
KM
Ferrante
G
G
Hills
B P
BP
D000465:Algorithms; D009682:Magnetic Resonance Spectroscopy / Q000379:methods*; D009010:Monte Carlo Method; D012815:Signal Processing, Computer-Assisted; D012996:Solutions; D013395:Sucrose / Q000737:chemistry*
D012996:Solutions; D013395:Sucrose