PREPARATION AND USE OF A SU195M XXAU-CONTAINING LIQUID

A method for preparing a 195mAu-containing liquid is provided. In the method, 195mHg is adsorbed on an adsorption agent and then the daughter radioisotope 195mAu is eluted from the adsorption agent with an eluant containing a gold-complexing agent. The adsorption agent comprises a mercury ion-binding material having a substantially stronger adsorption affinity for mercury ions than for gold ions. Also disclosed are a radioisotope generator capable of producing a 195mAu-containing liquid and a process for conducting a radiodiagrostic examination on a warmblooded animal using a 195mAu-containing liquid.