in tetrachloromethane; water Kinetics; an aliquot of aq. soln. containing varius concens. of hydrohalogenic acid and germanium compd. is shaken with an aliquot of CCl4 for 30 min in a centrifuge tube at 25°C; after phase sepn., the germanium concen. in both the phases is determined with an inductivity coupled argon plasma emission spectrometer;

in tetrachloromethane; water Kinetics; aq. soln. containing hydrohalogenic acid and a dried ion-exchange resin are placed in a centrifuge tube, addn. of germanium compd., shaking gently for 24 h at 25°C; resin is sepd. by filteration and shaken with aq. NaOH for 24 h to elute the germanium compd.; the germanium compd. concens. in hydrohalogenic acid and the elute is determined with the ICAP-500;

in tetrachloromethane; water Kinetics; aq. soln. containing hydrohalogenic acid and a dried ion-exchange resin are placed in a centrifuge tube, addn. of germanium compd., shaking gently for 24 h at 25°C; resin is sepd. by filteration and shaken with aq. NaOH for 24 h to elute the germanium compd.; the germanium compd. concens. in hydrohalogenic acid and the elute is determined with the ICAP-500;