Radiochemical investigation of chalcogenide films. XI. Method for investigating sorption kinetics without separation of the phases

The design of a reaction cell which permits the investigation of the sorption kinetics of microcomponents without separation of the phases under automated condition has been described. The use of thin-layer inorganic sorbents obtained by depositing films of a sorbing substance from aqueous solutions on flat substrates of small thickness makes it possible to determine the extent of sorption even at small values in the case of β emitters with a low energy and α emitters. Detailed observation of the kinetics of isotopic exchange in the CdS-115mCd-HNO3 system has made it possible to reveal at least four stages in the process during the time of observation