Sulfadimethoxine and sulfaguanidine: Their sorption potential on natural soils

► Sorption of sulfadimethoxine and sulfaguanidine on natural soils was determined. ► The results were modeled by linear, Freundlich and Langmuir sorption isotherms. ► Sorption potential is strongly influenced by many factors. ► Kd increased with OC and decreased at higher values of pH and ionic strength. ► Selected substances have the potential to be transported to water compartments.