1 H NMR study of the phase behavior of aqueous eutectic solutions using the inverse Laplace transform analysis of T2 relaxation.

High-field 1 H NMR T2 relaxation studies were used to characterize the changes in the physical phases of water, NaCl, and dextrose solutions over a temperature range of -65 to 15 °C. The data were analyzed with the inverse Laplace transform and with a linear fit to the logarithm of the time domain signal. Two liquid phases were detected for the NaCl and dextrose solutions at lower temperatures and assigned to low and high concentrated solution domains. The high concentrated solution domain was found to be present between -30 and -5 °C in the NaCl solution and between -55 and -5 °C in the dextrose solution. Copyright © 2017 John Wiley & Sons, Ltd.