Detection of trace amounts of Hg2+ in different real samples based on immobilization of novel unsymmetrical tetradentate Schiff base within PVC membrane
Abdel Aziz, Ayman; Sabry H. Seda;
Abstract
A novel fluorescence optical sensor for sensitive and selective determination of Hg2+ions in aqueous solution has been prepared. The sensing system is made of a novel unsymmetrical tetradentate Schiff base namely N-(2-hydroxyphenyl)-N′-(2-mercaptophenyl)-o-phthalylidene (HMP), as a neutral Hg2+-selective fluoroionophore immobilized in a plasticized PVC membrane containing potassium tetrakis-(4-chlorophenyl) borate (KTpClPB) as a lipophilic anionic additive. The response of the optode is based on the strong fluorescence enhancement of HMP upon exposure to Hg2+ions. Under the optimum conditions, the proposed sensor displays a linear response in concentration range of 2.27 × 10-11to 1.13 × 10-3mol/L, with a detection limit of 9.57 × 10-12mol/L. Furthermore, the proposed optode displays a good selectivity toward Hg2+ions in comparison with common coexisting cations. The sensor was applied successfully for determination of mercury ions in different real samples. © 2014 Elsevier B.V.
Other data
Title | Detection of trace amounts of Hg2+ in different real samples based on immobilization of novel unsymmetrical tetradentate Schiff base within PVC membrane | Authors | Abdel Aziz, Ayman ; Sabry H. Seda | Issue Date | 2014 | Publisher | ELSEVIER SCIENCE SA | Journal | Sensors and Actuators B: Chemical | DOI | 155 163 http://www.scopus.com/inward/record.url?eid=2-s2.0-84896508187&partnerID=MN8TOARS 197 10.1016/j.snb.2014.02.074 |
Scopus ID | 2-s2.0-84896508187 | Web of science ID | WOS:000334753200022 |
Recommend this item
Similar Items from Core Recommender Database
Items in Ain Shams Scholar are protected by copyright, with all rights reserved, unless otherwise indicated.