FIELD: measuring devices.
SUBSTANCE: method consists in the exposing of the mixture by the constant magnetic field; nuclear magnetization inversion is carried out by resonance variable magnetic field. The measurement of the signal NMR magnitude A(t) is implemented in time (t) after nuclear magnetization inversion, at that two values of signal magnitude are measured A(t1) at t=t1=Tp1ln2 and A(t2) at t=t2=Tp2ln2. The concentrations are determined from formulas: 
where Tp1, Tp2 - longitudinal relaxation times Tp of the components, A1, A2 - steady-state signal magnitudes of pure components, A(t1), A(t2) - mixture signal magnitudes at moments t equal to t1 and t2 relatively.
EFFECT: increasing of measurement adequacy and accuracy as well as simplification of measurement method.
