Distribution of 210Ро in lichen thalli

E. V. Puchkova, V. V. Eremin, O. G. Bogdanova, D. E. Himelbrant, I. S. Stepanchikova

Research output: Contribution to journalArticlepeer-review

Abstract

Distribution of 210Po in thalli of soil and wood (epiphytic) lichens was studied. Four fractions containing the corresponding 210Ро forms were obtained by sequential extraction: (1) intercellular, (2) extracellular, (3) intracellular, and (4) insoluble thallus residue. The 210Ро uptake by lichens is mainly passive, as the total content of the radionuclide in fractions 1, 2, and 4 reaches 88–97%. From 3 to 12% of 210Ро is taken up actively (fraction 3), and for soil lichens this parameter is approximately 2.75 times higher than for epiphytic lichens. Presumably, 210Ро is supplied into soil and epiphytic lichens in the form of different chemical compounds and is therefore characterized by different bioavailability.

Original languageEnglish
Pages (from-to)215-218
Number of pages4
JournalRadiochemistry
Volume59
Issue number2
DOIs
StatePublished - 1 Mar 2017

Scopus subject areas

  • Physical and Theoretical Chemistry

Keywords

  • polonium uptake by lichens
  • polonium-210
  • α-ray spectrometry

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