Construction of uranyl selective electrode based on complex of uranyl ion with new ligand carboxybenzotriazole in PVC matrix membrane

M. A. Abu-Dalo, N. A.F. Al-Rawashdeh, I. R. Al-Mheidat, N. S. Nassory

Research output: Contribution to journalConference articlepeer-review

9 Citations (Scopus)

Abstract

In the present study uranyl selective electrodes in polyvinyl chloride (PVC) matrix membrane were prepared based on a complex of uranyl ion (UO2) with carboxybenzotriazole (CBT) as ligand. The effect of the nature of plasticizer in PVC matrix were evaluated using three different plasticizers, these are dibutyl phthalate (DBP), dioctyl phthalate (DOP) and bis(2-ethylhexyl) sebacate (BHS). The results of this study indicated that the best plasticizer could be used is the DBP, which may be attributed to its lowest viscosity value compared to DOP and BHS. The electrodes with DBP as plasticizer exhibits a Nernstian response with a slope of 28.0 mV/ decade, over a wide range of concentration from 3.0×10-5-6.0×10-2 M and a detection limit of 4.0×10-6 M. It can be used in the pH range of 4.0-10.0 with a response time of less than 10 s for DBP and 25 s for both DOP and BHS. The effects of ions interferences on the electrode response were evaluated. The di- and tri-valent cations were found to interfere less than univalent cations, which was attributed to the high diffusion and the exchange rate between the univalent ions and the uranyl ion solution. The electrodes were characterized by Fourier Transform Infrared Spectroscopy (FTIR) and Scanning Electron microscopy (SEM). The results of the standard addition method were satisfactory with errors less than 7%. The developed electrode was found to be fast, sensitive and reliable indicated its potential use in measuring the uranly ion concentration in the field.

Original languageEnglish
Article number012023
JournalIOP Conference Series: Materials Science and Engineering
Volume92
Issue number1
DOIs
Publication statusPublished - Oct 12 2015
EventInternational Conference on Advanced Materials, ICAM 2015 - Irbid, Jordan
Duration: Apr 27 2015Apr 29 2015

ASJC Scopus subject areas

  • Materials Science(all)
  • Engineering(all)

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