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On hafnium chelation by EDTA and DTPA for TDPAC experiments

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Abstract

Polyaminocarboxilate chelating agents, like ethylenediaminetetraacetic acid (EDTA) and diethylenetriaminepentaacetic acid (DTPA), form stable complexes with many heavy metals ions and are of spread use in the industrial and biomedical field. In this paper, Time Differential Perturbed Angular Correlations (TDPAC) spectroscopy has been used to investigate the formation of Hf-complexes prepared from 181Hf-HfF4 and polyaminocarboxylic acids, by taking into account the possible formation of inorganic compounds. The obtained wet precipitates were measured at room temperature. Different behaviors were observed depending on the ratio fluorine/sodium atoms present in the sample. The obtaining of sodium heptafluorohafnate Na3HfF7 was verified when the ratio F/Na was approximately 1.5 and tridecafluorodihafnate Na5Hf2F13 appeared for relations between 3 and 4. No evidence of hafnium complexation by the polyaminocarboxilic acids was observed.

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Authors and Affiliations

  1. Departamento de Física, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, cc 67 1900, La Plata, Argentina

    Cecilia Y. Chain & A. F. Pasquevich

  2. Comisión de Investigaciones Científicas- Provincia de Buenos Aires (CICPBA), La Plata, Argentina

    A. F. Pasquevich

Authors
  1. Cecilia Y. Chain
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  2. A. F. Pasquevich
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Correspondence to Cecilia Y. Chain.

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Chain, C.Y., Pasquevich, A.F. On hafnium chelation by EDTA and DTPA for TDPAC experiments. Hyperfine Interact 197, 341–346 (2010). https://doi.org/10.1007/s10751-010-0224-1

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  • DOI: https://doi.org/10.1007/s10751-010-0224-1

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