Methods for decorporation of important fission products

Fission products incorporated into human body by accidents should be treated with an application of suitable decorporation method. Decorporation methods are divided into several groups according to their mechanism of action; 1) dilution of radio nuclide by its stable isotope or similar chemical behavior elements, 2) complex formation with chelating agents such as DTPA, 3) adsorption on insoluble materials such as charcoal, prussian blue, 4) disturbance of metabolism by medicine like hormone or deficient diet, and 5) others. The future research trends toward synthesis of new chelating agent and application of natural materials. Their effectiveness may be increased if they are applied in combination with other procedures. (author)