Abstract − Analytical Sciences, 18(3), 289 (2002).
Highly Selective Iodide Membrane Electrode Based on a Cerium Salen
Mohammad Reza GANJALI,* Tahereh POURSABERI,* Morteza HOSSEINI,* Masoud SALAVATI-NIASARY,** Mohammad YOUSEFI,* and Mojtaba SHAMSIPUR***
*Department of Chemistry, Tehran University, Tehran, Iran
**Department of Chemistry, Kashan University, Kashan, Iran
***Department of Chemistry, Razi University, Kermanshah, Iran
**Department of Chemistry, Kashan University, Kashan, Iran
***Department of Chemistry, Razi University, Kermanshah, Iran
A highly selective PVC membrane electrode based on a cerium-salen complex was prepared. The sensor displays an anti-Hofmeister selectivity sequence with a preference for iodide ion over many common organic and inorganic anions. The proposed electrode exhibits a near-Nernstian behavior over a wide concentration range (5.0 x 10-2 - 8.0 x 10-6 M) with a slope of 57.5 mV per decade, and a detection limit of 6.0 x 10-6 M. The electrode has a very fast response time and can be used in the pH range of 3.0 x 11.0. It was applied, as an indicator electrode, in potentiometric titration of Ag+ ions.
J-STAGE:
View this article in J-STAGE
Back to the Table of Contents
