title: Dysprosium selective potentiometric membrane sensor.
abstract: A novel Dy(III) ion-selective PVC membrane sensor was made using a new synthesized organic compound, 3,4-diamino-N'-((pyridin-2-yl)methylene)benzohydrazide (L) as an excellent sensing element. The electrode showed a Nernstian slope of 19.8 ± 0.6 mV per decade in a wide concentration range of 1.0 × 10(-6)-1.0 × 10(-2) mol L(-1), a detection limit of 5.5 × 10(-7) mol L(-1), a short conditioning time, a fast response time (<10s), and high selectivity towards Dy(III) ion in contrast to other cations. The proposed sensor was successfully used as an indicator electrode in the potentiometric titration of Dy(III) ions with EDTA. The membrane sensor was also applied to the F(-) ion indirect determination of some mouth washing solutions and to the Dy(3+) determination in binary mixtures.
authors.affiliation: Department of Applied Chemistry, Mashhad Branch, Islamic Azad University, Mashhad, Iran. Electronic address: haszamani@yahoo.com.
authors.forename: Hassan Ali
authors.initials: HA
authors.lastname: Zamani
authors.affiliation: Center of Excellence in Electrochemistry, Faculty of Chemistry, University of Tehran, Tehran, Iran.
authors.forename: Farnoush
authors.initials: F
authors.lastname: Faridbod
authors.affiliation: Center of Excellence in Electrochemistry, Faculty of Chemistry, University of Tehran, Tehran, Iran.
authors.forename: Mohammad Reza
authors.initials: MR
authors.lastname: Ganjali
mesh_terms: D004419:Dysprosium / Q000032:analysis* / Q000737:chemistry*; D004492:Edetic Acid / Q000737:chemistry; D017736:Ion-Selective Electrodes; D057230:Limit of Detection; D008567:Membranes, Artificial; D011199:Potentiometry / Q000295:instrumentation* / Q000379:methods*
chemical_list: D008567:Membranes, Artificial; D004419:Dysprosium; D004492:Edetic Acid