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Water signal suppression by T 2 ‐relaxation enhancement promoted by Dy(III) complexes
Author(s) -
Aime Silvio,
Botta Mauro,
Barbero Luca,
Uggeri Fulvio,
Fedeli Franco
Publication year - 1991
Publication title -
magnetic resonance in chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0749-1581
DOI - 10.1002/mrc.1260291316
Subject(s) - chemistry , signal (programming language) , proton , relaxation (psychology) , spectral line , nuclear magnetic resonance , modulation (music) , spin echo , chemical shift , analytical chemistry (journal) , magnetic resonance imaging , nuclear physics , organic chemistry , physics , medicine , psychology , social psychology , astronomy , computer science , acoustics , radiology , programming language
A novel method for water signal suppression in 1 H NMR spectra is proposed for biological systems. It is based on the acquisition of a spin–echo spectrum in the presence of Dy(III) complexes, which cause a marked decrease of the water proton T 2 through the modulation of Δω M (chemical shift difference between the bulk and coordinated water resonance) by τ M (time associated with the exchange between the two sites).