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Keywords:

  • alkaline earth metals;
  • biomineralization;
  • environmental chemistry;
  • green algae;
  • X-ray fluorescence microscopy
Thumbnail image of graphical abstract

Strontium sequestration by biomineralization of (Ba,Sr)SO4 in desmid green algae is examined quantitatively with synchrotron X-ray fluorescence microscopy. An increase in Sr incorporation by more than two orders of magnitude in cells exposed to a modified culture medium may have implications for selective removal of 90Sr from contaminated nuclear waste or the environment.