<sup>13</sup>C NMR and ESR Characterization of Humic Substances Isolated from Soils of Two Siberian Arctic Islands

<div>Typical ESR spectrum of humic substances investigated.</div>

International Journal of Ecology

Figure 5: <sup>13</sup>C NMR and ESR Characterization of Humic Substances Isolated from Soils of Two Siberian Arctic Islands 