Alginates with the various molecular masses as sorbents of cadmium and lead ions

By means of the modified method of acid hydrolysis from alginic acid were received oligouronides with different values of molecular masses. For definition the molecular-mass characteristics it was used high effective exclusive chromatography. The ability of the received alginates to connect ions of cadmium and lead was studied in vitro. To the description of sorption isotherms and estimation the sorption indicators it was applied Lengmuir, Friendlich's and Bryune-Emmet-Teller (BET)sorption models. It is established that middle-molecular and low-molecular alginates possess bigger sorption ability concerning cadmium and lead, than high-molecular alginate.