Saturation-recovery as a T1-filter for T2-T2 exchange NMR

E T Montrazi; T J Bonagamba

doi:10.1016/j.jmr.2019.03.001

Saturation-recovery as a T₁-filter for T₂-T₂ exchange NMR

J Magn Reson. 2019 Apr:301:67-72. doi: 10.1016/j.jmr.2019.03.001. Epub 2019 Mar 2.

Authors

E T Montrazi¹, T J Bonagamba²

Affiliations

¹ São Carlos Institute of Physics, University of São Paulo, PO Box 369, 13560-970 São Carlos, SP, Brazil. Electronic address: elton.montrazi@usp.br.
² São Carlos Institute of Physics, University of São Paulo, PO Box 369, 13560-970 São Carlos, SP, Brazil.

PMID: 30851667
DOI: 10.1016/j.jmr.2019.03.001

Abstract

The Inversion-Recovery (IR) technique has already been proposed to be used as a T₁-filter for T₂-T₂ Exchange experiments. However, when the Exchange experiments are employed for studying samples that show T₁ distributions, where the pools are defined by broad relaxation time distributions, e.g. porous media, IR might be difficult to be used as a filter. This paper presents the difficulties found when using IR and proposes the use of Saturation-Recovery (SR) technique as an alternative to T₁-filter.

Keywords: Exchange NMR; NMR; Porous materials; Saturation recovery.