title: Poly(vinyl chloride) membrane cesium ion-selective electrodes based on lipophilic calix[6]arene tetraester derivatives.
abstract: New lipophilic tetraesters of calix[6]arene and calix[6]diquinone are investigated as cesium ion-selective ionophores in poly(vinyl chloride) membrane electrodes. For an ion-selective electrode based on calix[6]arene tetraester I, the linear response is 1x10(-6)-1x10(-1) M of Cs(+) concentrations. The selectivity coefficients for cesium ion over alkali, alkaline earth and ammonium ions are determined. The detection limit (log a (Cs (+))=-6.31) and the selectivity coefficient (log k (Cs (+),Rb (+))(pot )=-1.88) are obtained for polymeric membrane electrode containing calix[6]arene tetraester I.
authors.affiliation: Department of Chemistry and Institute of Basic Science, Chonnam National University, Kwangju 500-757, South Korea.
authors.forename: H
authors.initials: H
authors.lastname: Oh
authors.forename: E M
authors.initials: EM
authors.lastname: Choi
authors.forename: H
authors.initials: H
authors.lastname: Jeong
authors.forename: K C
authors.initials: KC
authors.lastname: Nam
authors.forename: S
authors.initials: S
authors.lastname: Jeon