in contrast to the effect of the monovalent cations studied , di- or polyvalent cations ( and ag+ cations ) were incapable of producing c-bands , but appeared to stabilize the ba ( oh ) 2-induced reverse-banding pattern , this stabilizing effect was obtainable with relatively low cation concentrations and persisted even when c-band-producing cations were present at the same time .
C0007449
monovalent cations
C0007447
cations