title: Uranyl-selective PVC membrane electrodes based on some recently synthesized benzo-substituted macrocyclic diamides.
abstract: Four different recently synthesized macrocyclic diamides were studied to characterize their abilities as uranyl ion carriers in PVC membrane electrodes. The electrodes based on macrocycle 1,18-diaza-3,4;15,16-dibenzo-5,8,11,14,21,24-hexaoxacyclohexaeicosane-2,17-dione resulted in a Nernstian response for UO(2)(2+) ion over wide concentration ranges. The linear concentration range for the polymeric membrane electrode (PME) is 3.0x10(-6)-8.2x10(-3) M with a detection limit of 2.2x10(-6) and that for the coated graphite electrode (CGE) is 5.0x10(-7)-1.5x10(-3) M with a detection limit of 3.5x10(-7) M. The electrodes manifest advantages of low resistance, very fast response and, most importantly, good selectivities relative to a wide variety of other cations.
authors.affiliation: Department of Chemistry, Razi University, Kermanshah, Iran.
authors.forename: Mojtaba
authors.initials: M
authors.lastname: Shamsipur
authors.forename: Ahmad
authors.initials: A
authors.lastname: Soleymanpour
authors.forename: Morteza
authors.initials: M
authors.lastname: Akhond
authors.forename: Hashem
authors.initials: H
authors.lastname: Sharghi
authors.forename: Ahmad Reza
authors.initials: AR
authors.lastname: Massah