Preparation and evaluation of new uranyl imprinted polymerelectrode sensor for uranyl ion based on uranyl–carboxybezotriazole complex in PVC matrix membrane

International Conference and Exhibition on Materials Chemistry

March 31-April 01, 2016 Valencia, Spain

Nathir A F Al-Rawashdeh

University of Science and Technology, Jordan

Posters & Accepted Abstracts: J Material Sci Eng

Abstract :

In this study a new uranyl selective electrochemical sensors were prepared by using uranyl ionicimprinted polymer (IIP). The IIP was prepared by thermal polymerization using acrylic acid as a monomer,ethylene glycol dimethacrylate as a cross linking and a benzoyl peroxide as an initiator. Uranyl�carboxybenzotriazol (UO2�CBT) complex was used as an active material on the prepared polymer. Several uranyl electrodes were constructed by using different masses of polyvinyl chloride (PVC) matrix. Electrode parameters including slopes, working concentrations, pH, and interferences were evaluated. The electrodes exhibit a Nernstian response with slopes of 23.6 and 28.1 mV/decade for graphite uranylelectrode and liquid uranyl electrode, respectively, over a wide range of concentration from 3 �� 10�6 to 6 �� 10�2 M and a detection limit of 1 �� 10�6 M. It can be used in the pH range of 4.3�10.5 with a responsetime of less than 60 s. The effect of ions interferences on the electrode response were evaluated. The IIP and nonimprinted polymer membranes were char-acterized by Fourier Transform Infrared Spectroscopy and Scanning Electron microscopy. The concentrations of uranyl ion in the prepared synthetic solutions determined by the standard addition method and the results were satisfactory with errors less than 7%. Finally, the prepared graphite UO2-IIP sensor was tested to determine the uranyl ions concentrations in a real environmentalwater sample by standard addition method. The developed electrode was found to be fast, sensitive and reliable indicated its potential use in measuring the uranly ion concentration in the field.

Biography :

Email: nathir@just.edu.jo