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1 H NMR study of the phase behavior of aqueous eutectic solutions using the inverse Laplace transform analysis of T 2 relaxation
Author(s) -
Baughman Jessi A.,
Joseph Ray G.,
Christina Szabo M.,
Werling Jane O.,
Rinaldi Peter L.
Publication year - 2017
Publication title -
magnetic resonance in chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0749-1581
DOI - 10.1002/mrc.4605
Subject(s) - chemistry , eutectic system , inverse laplace transform , aqueous solution , logarithm , laplace transform , relaxation (psychology) , analytical chemistry (journal) , inverse , phase (matter) , thermodynamics , chromatography , mathematical analysis , crystallography , organic chemistry , mathematics , physics , microstructure , geometry , psychology , social psychology
High‐field 1 H NMR T 2 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.