Characterization of the biosorbent for the determination of barium

Nowadays, the widely used sorption methods are which use organic ion exchangers and inorganic sorbents. Regardless of the fact that the inorganic sorbents are highly selective for the determined ions and highly resistant to radiation, their use is restricted by technological parameters of these materials. In recent years use of biosorbents comes to the fore, among which we can include the compounds based on natural materials. Fungi have in their structure a number of functional groups and have high sorption capacity. To increase the sorption capacity of natural materials - mushrooms, it needed a suitable modification. The work was focused on the preparation of biosorbent with a future aim to characterize its sorption properties for determination of anthropogenic radionuclides. The main characteristics of the sorption properties of the composite biosorbent prepared from the fungus- Fomes fomentarius. (authors)