Figure 4
Tomographic reconstruction of the morphology of clusters of humic substances in a reduced (top image) and a re-oxidized (bottom image) state. The samples were filled into capillaries with diameters of 8 µm (top) and 10 µm (bottom) and kept at cryogenic temperatures. The glass walls are the top and the bottom limits of the images. The change in morphology as a result of the redox change is obvious. |