New method for determining the composition of liquid media during the express control of their state using the nuclear magnetic resonance phenomena

The processing of nuclear magnetic resonance (NMR) signals from various liquid media is an important step in monitoring their state. At the same time, the processing of NMR signals is quite a challenge during express control by NMR relaxometer. Therefore, the article substantiates the need to develop a new method for NMR signals processing. For this purpose, a universal mathematical model for describing the NMR signal from various media has been proposed. This model takes into account the features of recording signals using a modulation technique in a weak magnetic field. In addition, the article presents the results of calculations of the components concentrations in the studied mixtures of liquid media. Also these results are compared with the experimental data. (paper)