RT Journal Article
T1 Predicting PSR Filters by Transverse Relaxation Enhancements
A1 Correa, Juan
A1 Pinto, Luiz F.
A1 Riguera Vega, Ricardo
A1 Fernández Megía, Eduardo
AB The paramagnetic spin relaxation (PSR) filter allows the suppression of the NMR resonances of individual components in mixtures according to their Gd3+-complexing ability. The difficulty in predicting this property hampers, however, the widespread application of this filter. Herein we describe that the PSR filter is dominated by the transverse relaxation enhancement (R2p) experienced by nuclei in the presence of Gd3+, so that R2p represents a reliable predictive tool of suppression in the 1D and 2D PSR filter of complex mixtures. The robustness of R2p as a predictive tool in PSR filters has been demonstrated at different magnetic fields and for the 1H, 13C, COSY, and HMQC filtering of commercial multicomponent compositions, including beverages and drugs
PB American Chemical Society
SN 0003-2700
YR 2015
FD 2015
LK http://hdl.handle.net/10347/16950
UL http://hdl.handle.net/10347/16950
LA eng
NO Correa, J., Pinto, L., Riguera, R., & Fernandez-Megia, E. (2015). Predicting PSR Filters by Transverse Relaxation Enhancements. Analytical Chemistry, 87(1), 760-767. doi: 10.1021/ac5037186
NO This work was financially supported by the Spanish Government (CTQ2012-34790, CTQ2012-33436) and the Xunta de Galicia (CN2011/037). L.F.P. thanks the Portuguese Foundation for Science and Technology (FCT MCTES) for a Ph.D. grant (SFRH/BD/37341/2007)
DS Minerva
RD 28 abr 2026