Investigation of Proton Magnetic Resonance Line Width of Sorbed Water

Abstract

Investigation of conformational changes of organic molecules sorbed in zeolites by proton magnetic resonance spectroscopy

In-cell NMR: Why and how?

“…The NMR signal was measured by low resolution nuclear magnetic absorption at that time, and the authors soon discovered that the correlation between measured intensities and water content was not perfect [1496]. They realized for instance that ''soluble solids" such as carbohydrates, proteins or fatty acids were contributing to the NMR signal from apple tissues or in milk, whereas starch in potato tissues made negligible contributions [1497][1498][1499][1500]. Hence, to be accurate, NMR quantification of water required a prior estimation of these soluble species.…”

NMR microscopy of tissue in organic and mixed solvents

“…Thus, it is not surprising that the interaction of water with tissue was one of the first applications of NMR in biological systems. 6 For MRI and magnetic resonance spectroscopy (MRM), only fast interactions that affect the properties of bulk water are of interest. Then, the observed macroscopic property, R obs (chemical shift, relaxation rates, diffusion rate, etc.…”

The NMR of Polymers

“…This interaction limits the mobility of the water molecules and leads to an increas~ in the width of the NMR line of water. This has been observed'for many systems [161,362,387,616]. 80 180 Moisture content, "/0 Fig.…”