Fig. 1: Effect of oxygen on zero-filed NMR J-spectra of trimethyl phosphate.
From: Zero- to low-field relaxometry of chemical and biological fluids
a Zero-field NMR J-spectra (showing resonances at 2JHP, 3JHP, and 4JHP) of the trimethyl phosphate samples prepared with a different number of freeze-pump-thaw cycles (0, 1, 2, and 3). Each spectrum is a result of averaging 64 transients. b Extracted transverse relaxation time T2 of trimethyl phosphate in zero magnetic field versus the number of freeze-pump-thaw cycles performed during the sample preparation. Each experimental point and each error bar indicate the mean and standard error values of relaxation time extracted from three peaks shown in a, respectively.
