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Keywords:

  • adsorption;
  • analytical chemistry;
  • clays;
  • environmental chemistry;
  • lanthanides
Thumbnail image of graphical abstract

Heavy metal and rock: Humic acid (HA) in natural clays can play an important role in the (im)mobilization (complexation) of toxic metal ions such as radionuclides in the deep geological disposal of high-level radioactive waste. To better understand the influencing factors, the sorption behavior of Eu3+ and Gd3+ ions, as homologues of the actinides Am and Cm, was studied under various conditions.