Ruan Francisco Firmano

Research interests: Long-term management practices on soil phosphorus (P), potassium (K) and carbon (C); P speciation; P extractants; oxyanion bonding mechanisms; biosurface interactions; metal-ligand complexes // Techniques: Synchrotron-based techniques (XANES; EXAFS); XRF; DRX; ATR-FTIR; biogeochemical essays; etc. // Working now: Magnesium (Mg) effects on C sequester onto Hm; cations and pH on the adsorption and activity of P-mineralizing enzymes in colloidal systems.