Summary
Electrophoresis followed by neutron activation analysis was utilized to determine chromium(III) and (VI) in mixed solutions. These solutions proceeded from Cr(VI) adsorbed hydrotalcites heated at 800 °C to partially immobilize Cr in the Mg-Al oxide solid solution. Immobilization was studied by Cr lixiviation with NaCl solutions through the heated hydrotalcites. The results have shown that Cr lixiviated was in the form of CrO42- ions, mainly because some Cr(VI) was not completely reduced to Cr(III) during heating. Chromium lixiviated from HT-Cr sample, heated at 800 °C and γ-irradiated at 1000 kGys, was found, as well, in the form of CrO42- ions. Although γ-irradiation increases Cr immobilization in the solid, it does not reduce completely all CrO42- ions present in the solid and, therefore, some Cr is lixiviated through the solid in the form of CrO42- ion.
Similar content being viewed by others
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Martínez-Gallegos, S., Bulbulian, S. Neutron activation analysis for chromium(III) and (VI) in lixiviated liquid through a calcined chromium(VI) adsorbed hydrotalcite. J Radioanal Nucl Chem 266, 285–287 (2005). https://doi.org/10.1007/s10967-005-0905-4
Issue Date:
DOI: https://doi.org/10.1007/s10967-005-0905-4