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We report on the design of a lead(II)-selective electrode based on the use of lead(II) imprinted polymer nanoparticles (IP-NPs), and its application for the differential pulse voltammetry determination of lead ions. The IP-NPs were obtained by precipitation polymerization of 4-vinylpyridine (the functional monomer), ethylene glycol dimethacrylate (the cross-linker), 2,2’-azobisisobutyronitrile (the initiator), 4-(2-pyridylazo)resorcinol (the lead-binding ligand), and lead ions (the template ion) in acetonitrile solution. After polymerization, the Pb(II) in the polymer nanoparticles were leached out with dilute hydrochloric acid to create cavities for hosting Pb(II). The new sensor showed high selectivity for lead ions in the presence of common potential interferences according to the specific recognition nature of the synthesized material. A carbon paste electrode was modified with the IP-NPs, and differential pulse stripping …