title: Bis(2-hydroxyacetophenone)ethylenediimine as a neutral carrier in a coated-wire membrane electrode for lead(II).
abstract: A coated-wire ion-selective electrode (CWISE), based on a Schiff base as a neutral carrier, was successfully developed for the detection of Pb(II) in aqueous solution. CWISE exhibited a linear response with a Nernstian slope of 29.4 +/- 0.5 mV/decade within the concentration range of 1.0 x 10(-5) - 1.0 x 10(-1) M lead ion. CWISE has shown detection limits of 5.0 x 10(-6) M. The electrode exhibited good selectivity over a number of alkali, alkaline earth, transition and heavy metal ions. This sensor yielded a steady potential within 10 to 20 s at a linear dynamic range. The electrode was suitable for use in aqueous solutions in a pH range of 2.0 to 5.0. Applications of this electrode for the determination of lead in real samples and as indicator electrode for potentiometric titration of Pb2+ ion using K2CrO4 are reported.
authors.affiliation: Chemistry Department, Yazd University, Yazd, Iran. mazloum@kashanu.ac.ir
authors.forename: Mohammad
authors.initials: M
authors.lastname: Mazloum Ardakani
authors.forename: Pouran
authors.initials: P
authors.lastname: Pourhakak
authors.forename: Masoud
authors.initials: M
authors.lastname: Salavati-Niasari