the change in electrostatical potential-profile across the phospholipid membranes caused by the binding or sorption of ionic compounds ( metal cations , ionic surfactants , lipid-soluble ions , and ionophore-metal complexes ) can be estimated by the direct measuring method ( combination of zeta potential of lipid vesicles and surface potential of lipid monolayer ) .
C0007447
cations
C0022023
ions