Specific surface area and surface charges of some argentinian soils |
| |
| Authors: | R M Torres Snchez S Falasca |
| |
| Institution: | R. M. Torres Sánchez,S. Falasca |
| |
| Abstract: | The specific surface areas of nine argentinian soils obtained by adsorption followed the order N2 < ethylene glycol < H2O, attributed to the presence of smectites (verified by XRD analysis) and some organic coating. The H2O2 treatment of these soils modified the former order of surface area determined by different absorbents. This order was modified because the mineral surface was evidenced and an increase of cation adsorption was produced by organic matter removal. This fact was supported by the decrease of PZC values of soils after H2O2 treatment. The specific surface area of initial soils obtained by water and ethylene glycol adsorptions showed a good correlation with carbon content and CEC of untreated soils and with the PZC of protonated soils. |
| |
| Keywords: | |
|
