Study of HDEHP-PAN solid extractants for the determination of 90Sr View Full Text


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Article Info

DATE

2010-10-10

AUTHORS

Filip Kužel, Petra Staffová, Irena Špendlíková, Jan John, Ferdinand Šebesta

ABSTRACT

Solid extractants containing di-(2-ethylhexyl)phosphoric acid (HDEHP) in the support based on modified polyacrylonitrile (PAN) were studied for the determination of 90Sr by means of measuring the activity of its separated 90Y daughter. In this paper, 152Eu and 133Ba were used as chemical homologues of 90Y and 90Sr. For these radionuclides, dependences of mass distribution coefficients (Dg) on the nitric acid concentration were measured for several types of HDEHP-PAN solid extractants. The mechanism of the Eu3+ and Ba2+ ions extraction was confirmed to follow the theoretical two-phase equation for the chelating extractants. Further, the influences of the presence of nitrates, calcium and iron ions on the values of Dg(Ba, Eu) were determined concentrating on the possibility of masking the iron ions by the addition of the ascorbic acid. This method was tested on the solution simulating the leachate of ashed green plant sample. The results obtained make the application of solid extractants containing HDEHP in PAN support prospective for 90Sr determination. More... »

PAGES

729-734

References to SciGraph publications

  • 1997-06. Composite sorbents of inorganic ion-exchangers and polyacrylonitrile binding matrix in JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
  • 2010-01-06. Extraction chromatographic material with HDEHP on polyacrylonitrile (PAN) in JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
  • Identifiers

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    http://scigraph.springernature.com/pub.10.1007/s10967-010-0864-2

    DOI

    http://dx.doi.org/10.1007/s10967-010-0864-2

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