The transport of calcium and sodium ions across bilayers induced by neutral synthetic ligands used in specific electrodes.

Neutral synthetic ligands of calcium and sodium which enter into the liquid membrane composition of the selective electrodes of these ions have been incorporated within the bilayer. The membrane conductance measured shows that each of these two ligands behave as ion carriers for calcium or sodium ions. The selectivities with respect to the other alcaline or alcaline earth ions are similar to those observed by potentiometric measurements with thick liquid membrane selective electrodes.