Role of biomolecules in selective extraction of U(VI) using an aqueous biphasic system

  • Rajib Karmakar
  • Kamalika SenEmail author


An aqueous biphasic system has been used for selective extraction of U(VI) ions from Th(IV), Sm(III) and Ce(III). Role of different biomolecules like morin, catechin, hesperidin and 4-hydroxycoumarin have been studied. Morin serves as the best reagent when citrate ions are used as a masking agent. Citrate forms stronger complexes with the other metal ions than morin thereby restricting their extractions. Contrarily, U(VI) forms a stronger complex with morin than citrate and is selectively extracted under the same conditions. It was also observed that morin can act as a spectrophotometric reagent for ratiometric detection and analysis of U(VI) ions.


Aqueous biphasic system Spectrophotometry Ratiometry Uranyl ions Binding constant 



R. K. gratefully acknowledges the University Grants Commission (UGC), New Delhi, India (Ref No. 19/06/2016(i)EU-V dated 14/06/2017) for providing necessary fellowship. K. S. acknowledges UGC CAS V for funding. The authors are thankful to Prof. Susanta Lahiri, Head, Chemical Sciences Division, Saha Institute of Nuclear Physics, Kolkata, India, for providing the uranium sample.

Supplementary material

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Supplementary material 1 (DOCX 741 kb)


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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2019

Authors and Affiliations

  1. 1.Department of ChemistryUniversity of CalcuttaKolkataIndia

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