Competitive adsorption of uranyl ions in the presence of Pb(II) and Cd(II) ions by poly(glycidyl methacrylate) microbeads carrying amidoxime groups and polarographic determination

Caykara T., Alaslan S. S., Inam R.

JOURNAL OF APPLIED POLYMER SCIENCE, vol.104, no.6, pp.4168-4172, 2007 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 104 Issue: 6
  • Publication Date: 2007
  • Doi Number: 10.1002/app.26205
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.4168-4172
  • Gazi University Affiliated: Yes


The adsorption capacity of UO22+ in the presence of Pb(II) and Cd(II) ions was investigated with amidoximated poly(glycidyl methacrylate) (PGMA) microbeads with an average size of 135 mu m packed in a glass column (0.5-cm i.d. and 20-cm length, flow rate = 3 mL/min) under competitive conditions. A differential pulse polarography technique was used for the determination of trace quantities of uptaken elements by the measurement of the reduction peak currents at -200 / -950, -400, and -600 mV (vs a saturated calomel 2 electrode) for UO22+, Pb(H), and Cd(II) ions, respectively. When only UO22+ was found in the eluate, its adsorption was 85.3% from a 50 mu M initial solution. However, when there was UO22+ with binary systems of Pb(II) or Cd(II), it was 78.2 and 76.3%, respectively. On the other hand, in a ternary mixure with Pb(H) and Cd(II), the adsorption was found lure of UO22+ to be 75.2% with the same initial concentration. According to the results, the competitive adsorption studies showed that these amidoximated PGMA microbeads had good adsorption selectivity for UO22+ with the coexistence of Pb(II) and Cd(II) ions. The ionic strength of the solution also influenced the UO22+ adsorption capacity of the amidoximated PGMA microbeads. (c) 2007 Wiley Periodicals, Inc.