Extraction of barium from water into nitrobenzene using cesium dicarbllycobaltate in the presence of 18-crown-6

摘要

Extraction of microamounts of barium with a nitrobenzene solution of cesium dicarbollylcobaltate (Cs~+B~-) in the presence of 18-crown-6(18C6,L) had been investigated.The equilibrium data have been explained assuming that the complexes CsL~+,CsL_(2~(2+)) andBaL_(2~(2+)) and Bal_(2~(2+)) are extracted into the organic phase.The values of extractioin and staility constants of hte species in nitrobenzene saturated with water have been determined.