ION-SELECTIVE LIQUID MEMBRANE-ELECTRODE FOR DISCRIMINATION OF ALKYLLEAD DERIVATIVES AND INORGANIC LEAD IONS

An investigation by using ion-selective electrodes on the discriminati on of Pb2+ and R3Pb+, where R is an alkyl substituent, is the subject of the present paper. Select macrocyclic thiacrown ethers are applied as active ligands. The response and selectivity of electrodes based on thiacrown ethers and ionophore-free electrodes towards inorgnaic lead ions and alkyllead substituents in model solutions and mazine cell sa p are reported. The presented electrodes could be recommended as a rel atively cheap and simple method for lead speciation.