Dysprosium selective potentiometric membrane sensor

Hassan Ali Zamani; Farnoush Faridbod; Mohammad Reza Ganjali

doi:10.1016/j.msec.2012.10.004

Dysprosium selective potentiometric membrane sensor

Mater Sci Eng C Mater Biol Appl. 2013 Mar 1;33(2):608-12. doi: 10.1016/j.msec.2012.10.004. Epub 2012 Oct 23.

Authors

Hassan Ali Zamani¹, Farnoush Faridbod², Mohammad Reza Ganjali²

Affiliations

¹ Department of Applied Chemistry, Mashhad Branch, Islamic Azad University, Mashhad, Iran. Electronic address: haszamani@yahoo.com.
² Center of Excellence in Electrochemistry, Faculty of Chemistry, University of Tehran, Tehran, Iran.

PMID: 25427463
DOI: 10.1016/j.msec.2012.10.004

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.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Dysprosium / analysis*
Dysprosium / chemistry*
Edetic Acid / chemistry
Ion-Selective Electrodes*
Limit of Detection
Membranes, Artificial*
Potentiometry / instrumentation*
Potentiometry / methods*

Substances

Membranes, Artificial
Dysprosium
Edetic Acid