Novel Ion-imprinted Polymer as a Tool for Selective Determination of SbIII in Natural Waters

Authors

  • Tanya Yordanova Faculty of Chemistry and Pharmacy, Sofia University “St. Kliment Ohridski”, Bulgaria
  • Ivanka Dakova Faculty of Chemistry and Pharmacy, Sofia University “St. Kliment Ohridski”, Bulgaria
  • Irina Karadjova Faculty of Chemistry and Pharmacy, Sofia University “St. Kliment Ohridski”, Bulgaria

DOI:

https://doi.org/10.7546/CRABS.2023.03.05

Keywords:

antimony, speciation, ion-imprinted polymer, solid-phase extraction

Abstract

A novel SbIII-imprinted polymer was synthesized via radical copolymerization of methacrylic acid and trimethylolpropane trimethacrylate in the presence of 2-mercapto-N-(2-naphthyl)acetamide as a chelating ligand forming the functionality of specific binding sites. The extent of ligand incorporation in the active centres was evaluated by elemental analysis and found to be 73.6%. The IIP was utilized as a sorbent material for selective solid-phase extraction of SbIII in drinking waters after optimization of sorption and desorption processes in a batch mode. Excellent separation of SbIII and SbV was accomplished at pH 8 followed by elution of SbIII with 0.5 M thiocarbamide. Analytical procedure for non-chromatographic speciation and determination of SbIII was developed demonstrating very good precision (RSD 7–11%) and recoveries between 97–105%. This procedure enabled up to 25-fold reconcentration and completely met the requirements of EU legislation for the quality of water intended for human consumption.

Author Biographies

Tanya Yordanova, Faculty of Chemistry and Pharmacy, Sofia University “St. Kliment Ohridski”, Bulgaria

Mailing Address:
Faculty of Chemistry and Pharmacy,
Sofia University “St. Kliment Ohridski”
1 James Bourchier Blvd
1164 Sofia, Bulgaria

E-mail: t.yordanova@chem.uni-sofia.bg

Ivanka Dakova, Faculty of Chemistry and Pharmacy, Sofia University “St. Kliment Ohridski”, Bulgaria

Mailing Address:
Faculty of Chemistry and Pharmacy,
Sofia University “St. Kliment Ohridski”
1 James Bourchier Blvd
1164 Sofia, Bulgaria

E-mail: i.dakova@chem.uni-sofia.bg

Irina Karadjova, Faculty of Chemistry and Pharmacy, Sofia University “St. Kliment Ohridski”, Bulgaria

Mailing Address:
Faculty of Chemistry and Pharmacy,
Sofia University “St. Kliment Ohridski”
1 James Bourchier Blvd
1164 Sofia, Bulgaria

E-mail: ahikr@chem.uni-sofia.bg

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Published

27-03-2023

How to Cite

[1]
T. Yordanova, I. Dakova, and I. Karadjova, “Novel Ion-imprinted Polymer as a Tool for Selective Determination of SbIII in Natural Waters”, C. R. Acad. Bulg. Sci. , vol. 76, no. 3, pp. 368–376, Mar. 2023.

Issue

Section

Chemistry