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Article
Reactive trace element enrichment in a highly modified, tidally inundated acid sulfate soil wetland: East Trinity, Australia
Marine Pollution Bulletin
  • Annabelle F Keene, Southern Cross University
  • Scott G Johnston, Southern Cross University
  • Richard T Bush, Southern Cross University
  • Edward D Burton, Southern Cross University
  • Leigh A Sullivan, Southern Cross University
Document Type
Article
Publication Date
1-1-2010
Abstract
This study examines the abundance of trace elements in surface sediments of a former acid sulfate soil (ASS) wetland subjected to marine tidal inundation. Sediment properties of this highly modified study site are compared with those of an adjacent unmodified, intertidal mangrove forest. Whilst some trace elements (Al, Cd, Mn, Ni and Zn) were clearly depleted due to mobilisation and leaching in the previous oxic–acidic phase, other trace elements (As and Cr) displayed significant enrichment in the tidally inundated ASS. Many trace elements were strongly associated with the reactive Fe and acid volatile sulfide (AVS) fractions, suggesting that trace elements may be adsorbed to abundant reactive Fe phases or sequestered as sulfide minerals. These findings provide an important understanding of the fate and mobility of reactive iron, AVS and trace elements during tidal remediation of a formerly acidified Great Barrier Reef (GBR) catchment.
Citation Information
Keene, AF, Johnston, SG, Bush, RT, Burton, ED & Sullivan, LA 2010, 'Reactive trace element enrichment in a highly modified, tidally inundated acid sulfate soil wetland: East Trinity, Australia', Marine Pollution Bulletin, vol. 60, no. 4, pp. 620-626.

Marine Pollution Bulletin home page available at www.elsevier.com/locate/marpolbul

Publisher's version of article available at http://dx.doi.org/10.1016/j.marpolbul.2010.02.006