Mn oxides are reactive soil minerals that can bind or oxidize organic compounds, but their role in regulating soil C storage is relatively unexplored. These stabilizing and destabilizing interactions may influence soil C storage and transformation. The study indicates that Mn oxides effectively oxidize organic compounds to release CO 2 but also demonstrate a high capacity to adsorb and immobilize organic compounds. This study demonstrates that organic compounds experience varied interactions with Mn oxides that primarily result in degradation but can also lead to organic C stabilization on the mineral surface. Most studies examining C stabilization by soil minerals have focused on iron and aluminum oxides without considering the importance of less abundant manganese (Mn) oxides that have high sorption capacity and reactivity. Therefore, understanding how soil minerals interact with a variety of organic compounds is essential to anticipating soil C storage and fluxes and their contributions to global climate change. Much of the organic carbon (C) stored in soils is associated with soil minerals. ![]() ![]() Small organic molecules exhibit varied interactions with manganese (Mn) oxides that either stabilize carbon (C) through sorption to the mineral surface (e.g., phthalate) or destabilize C through oxidative degradation to form carbon dioxide (CO 2).
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