The invention relates to an NMR analysis system and method for obtaining an NMR signal from a liquid solution enhanced in relation to the value that it would have on the basis of the thermodynamic equilibrium. It has been discovered in a surprising manner that if the spins of the cores of a highly-polarised polarisation source and the spins of the cores of the liquid solution are irradiated such that a polarisation transfer, such as a Hartmann-Hahn transfer, of the spins of the cores of the source to the spins of the cores of the liquid solution is carried out by means of a coherent coupling resulting from the dipolar field created by the cores of the source, an NMR signal of the liquid solution is obtained, said signal being significantly enhanced in relation to the value it would have on the basis of the thermodynamic equilibrium.