title: A lead(II)-selective PVC membrane based on a Schiff base complex of N,N'-bis(salicylidene)-2,6-pyridinediamine.
abstract: PVC membrane electrodes for lead ion based on N,N'-bis(salicylidene)-2,6-pyridinediamine as membrane carrier were prepared. Among their membranes, a membrane electrode (m-3) containing o-NPOE as a plasticizer and 50mol% additive displays an excellent Nernstian response (29.4mV/decade) and the limit of detection of -loga (M) = 6.04 to Pb(2+) in Pb(NO(3))(2) solutions at room temperature. It has a rapid response time within 10s over the entire concentration range. The proposed electrode revealed good selectivity and response for Pb(2+) over a wide variety of other metal ions in a pH 5.0 buffer solutions, and good reproducibility of base line in subsequent measurements.
authors.affiliation: Department of Chemistry, Institute of Basic Science, Chonnam National University, Gwangju 500-757, Korea.
authors.forename: Taejun
authors.initials: T
authors.lastname: Jeong
authors.forename: Hyo Kyoung
authors.initials: HK
authors.lastname: Lee
authors.forename: Dae-Cheol
authors.initials: DC
authors.lastname: Jeong
authors.forename: Seungwon
authors.initials: S
authors.lastname: Jeon