“…Terrestrial dissolved organic matter appeared to be stabilized by iron (Lv et al, ; Rathjeb, Causon, Krachler, & Hann, ; Riedel, Zak, Biester, & Dittmar, ), whereas iron hydroxides were proposed as inorganic modulator of dissolved organic matter leaching and responsible for the sink of aromatic SOM (Linkhorst, Dittmar, & Waska, ). Moreover, binding to iron improved the size and conformational stability of humic superstructures (Nuzzo et al, ), whereas complexation of humic molecules with metallic iron promoted formation of oxides and reduction of humic matter (Pankratov & Anuchina, ).…”