Advertisement

Adsorption Properties of Functional Silicas Towards Some Toxic Metal Ions in Water Solutions

  • Valentin Tertykh
  • Lilya Polishchuk
  • Victor Yanishpolskii
  • Elina Yanovska
  • Arsentij Dadashev
  • Valerii Karmanov
  • Olya Kichkiruk
Conference paper
Part of the NATO Science for Peace and Security Series C: Environmental Security book series (NAPSC)

Processes of preconcentration of heavy toxic metal ions, such as Pb(II), Cd(II), Zn(II), Hg(II), and Mo(VI) on the silica with covalently bound complexing phenolic-type analytical reagents 8-hydroxyquinoline, 1-(2-pyridylazo)-2-naphthol, 4-(2-pyridylazo)resorcinol have been studied. Structures of the surface complexes of toxic metals with grafted analytical reagents were determined using IR, ESR and electronic diffuse reflectance spectroscopies. Possibility of simultaneous determination of micro amounts of heavy metals was demonstrated using the x-ray fluorescence analysis of modified adsorbents after absorption of metal ions from their multicomponent mixtures in natural and artificial water solutions. Silica gel with adsorbed polyionene (1,4-MePh) was shown to have high adsorption properties towards some metal-containing anions, in particular MoO2-4, WO2-4 and Cr2O2-7 in water solutions. Adsorption isotherms of these metal-containing anions on initial silica gel and silica-supported polyionene were investigated.

Keywords: modified silica; immobilized 8-hydroxyquinoline; 1-(2-pyridylazo)-2- naphthol; 4-(2-pyridylazo)resorcinol; polyionene; preconcentration; heavy metal ions; x-ray fluorescence analysis

Keywords

Silica Surface Atomic Absorption Analysis Electronic Paramagnetic Resonance Separation Degree Quaternary Nitrogen Atom 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Copyright information

© Springer Science+Business Media B.V 2008

Authors and Affiliations

  • Valentin Tertykh
    • 1
  • Lilya Polishchuk
    • 1
  • Victor Yanishpolskii
    • 1
  • Elina Yanovska
    • 2
  • Arsentij Dadashev
    • 2
  • Valerii Karmanov
    • 2
  • Olya Kichkiruk
    • 3
  1. 1.Institute of Surface Chemistry of Academy of Sciences of UkraineUkraine
  2. 2.Chemistry Department of Kyiv National Taras Shevchenko UniversityUkraine
  3. 3.Franko State UniversityUkraine

Personalised recommendations