Radionuclides and stable elements in vegetation in Australian arid environments: Concentration ratios and seasonal variation

Maria Angelica D. Rea, Mathew P. Johansen, Timothy E. Payne, Gillian Hirth, Jim Hondros, Samantha Pandelus, William Tucker, Tim Duff, Attila Stopic, Liesel Green, Allan Pring, Claire E. Lenehan, Rachel S. Popelka-Filcoff

Research output: Contribution to journalArticlepeer-review

Abstract

Data on the uptake of elements and radionuclides by flora from soils in arid environments are underrepresented in international databases, especially when comparing across seasons. This study improved the understanding on the uptake of natural uranium-series radionuclides, as well as more than 30 elements, in a range of Australian native flora species that are internationally representative of an arid/semi-arid zone (e.g. Acacia, Astrebla, Atriplex, and Dodonea). Results indicate that the soil-to-plant uptake ratios were generally higher when compared with international data for grasses and shrubs from more temperate environments. The majority of the elemental concentrations in grasses were higher in winter than in summer and the opposite trend was found in shrubs, which suggests that the season of collection potentially introduces variability in the reported concentration ratios. The data also suggest that grasses, being dominant and widespread species in arid zones, may be effective as a reference organism to ensure comparative assessment across sites of interest. The results of this study will improve the confidence of environmental assessments in arid zones.

Original languageEnglish
Article number106627
Number of pages9
JournalJournal of Environmental Radioactivity
Volume234
DOIs
Publication statusPublished - Aug 2021

Keywords

  • Alpha spectroscopy
  • Biota
  • Environmental protection
  • NAA
  • Radionuclide
  • Seasonal variability

Fingerprint

Dive into the research topics of 'Radionuclides and stable elements in vegetation in Australian arid environments: Concentration ratios and seasonal variation'. Together they form a unique fingerprint.

Cite this