Low-Temperature Observation of Oxygen-17 NMR in H2O, D2O, and Eutectic Solutions

Abstract

Although linewidths for the oxygen‐17 resonance were recorded in supercooled H2O and D2O, it has not been possible to obtain a signal from these pure solids.Linewidth measurements were also made to —79°C in a LiI–H2O eutectic solution.Ice with ∼10% ammonium fluoride in solid solution did not display the 17O resonance below the eutectic temperature. The deuterium resonance in a 0.15M NaCl—D2O solution was used to demonstrate the presence of liquid eutectic solution in polycrystallineice.