Figure 3From: Local structure and paramagnetic properties of the nanostructured carbonaceous material shungite The EPR spectra of the ShF1 sample at different conditions. 1 - initial, 2–0.5 h pumping at 130°C, and 3 - after 24-h storage in air. ν = 9,380 MHz. Tmeas. = 300 K.Back to article page