Accounting for spin relaxation in quantitative pulse gradient spin echo NMR mixture analysis.

Brian Antalek

doi:10.1021/ja062592c

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Accounting for spin relaxation in quantitative pulse gradient spin echo NMR mixture analysis.

Brian Antalek

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Abstract

Pulsed gradient spin-echo (PGSE) NMR is intrinsically nonquantitative. Because the experiment is echo-based, differences in the relaxation behavior of the nuclei among the components give rise to varied intensities and lead to nonquantitative spectra. A method is presented that restores resolved, quantitative spectra from mixtures by processing data from several PGSE NMR experiments with varied delay times. The approach incorporates a simple data acquisition scheme and leads to a computationally fast, linear least-squares analysis. It is anticipated the method will be of much interest for performing mixture analysis of polymer solutions and the characterization of surface-modified nanoparticulate dispersions.

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Brian Antalek. 2006-07-05. Accounting for spin relaxation in quantitative pulse gradient spin echo NMR mixture analysis.. https://doi.org/10.1021/ja062592c

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