Fig. 4: 13C hyperpolarization of 2-13C lactic acid as function of BPol0. | Communications Chemistry

Fig. 4: 13C hyperpolarization of 2-13C lactic acid as function of BPol0.

From: Nuclear spin polarization of lactic acid via exchange of parahydrogen-polarized protons

Fig. 4

There is a tendency of higher P for higher fields. The highest polarization was found at BPol0 = 95 mT, and the lowest polarization was found at 5 mT. The experiments were carried out using the optimized ratio of c1/c(LA) ≈ 3.5, c(LA) = 40 mM and DEPT 135° set to 139 Hz (3.6 ms evolution period). Note that the error bars (standard deviation) indicate relatively strong fluctuations (each point is a mean of 3 scans). Enhancement is calculated with respect to thermal signal at 1T.

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