Novel Technique In Production Of Pb (II)- Imprinted Polymers

Abstract

Ion imprinting techniques were used to produce ion imprinted polymer (IIP) particles for the selective removal of Pb2+ from aqueous environments. As the Templating monomers, acrylic acid, acrylic amine ligand, and Methylene Bisacrylamide crosslinker were chosen. The imprinted polymer was prepared by free radical polymerization. By leaching with 0.1 M HCl, the (Pb2+) ion was removed from the template. The polymer particles were characterized by IR spectroscopy, Thermal analysis and potentiometric analysis. The produced polymer was mechanically crushed into fine particles, assembled into a sensor probe, and linked to a bare HB graphite pencil electrode (GPE). The sensor has a linear dynamic range for Lead (II) ion determination of 4.5-50 ppb and provides best results at pH 4.6 under conditions of continual stirring. In a setting with many analytes, the sensor has been applied to monitor Lead (II) ions. The prepared samples showed high thermal stability with high selectivity for electrochemical detection of lead metal ions.