131Cs radionuclids in modify chitosan sorbents to obtaining of the spherical polymer X-emitters for brachytherapy
In this work was described the creation method of the hermetic granules of the X-emitters on base of 131Cs for using in brachytherapy. The chitosan and modified additives are being used as a sorbent for 131CsCl ions. The maximal sorption of 131CsCl ions was obtained by adding to chitosan solution the potassium ferro (II)cyanide and copper or nickel chlorides. For forming the granules of X-emitters, the radioactive drops through of syringe were serially passed through air layer, solutions of the xylene and alkali sodium. The received granules has been crosslinking with glutaraldehyde solution for it`s forming hardness and hermeticity. The diameters and radioactivity of the granules can be regulated within 0.5±0.05 – 1.0±0.1 mm and (7.4 – 22.2)·107 Bq, respectively.
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