Journal
MARINE POLLUTION BULLETIN
Volume 89, Issue 1-2, Pages 435-443Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2014.10.002
Keywords
Heavy metals contamination; Exchangeable metals fraction; Surficial sediments; Estuaries; Moreton Bay
Funding
- University of Queensland (International Postgraduate Research Scholarship)
- Australian National Centre for Groundwater Research and Training (Program 3)
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Trace element concentrations in surface intertidal sediments were analyzed to assess the level of contamination along the western side of Moreton Bay (Australia). The environmental risks posed by metals were evaluated using sediment quality guidelines, the Risk Assessment Code (RAC) and enrichment relative to background levels. Chromium, Ni, and Cu are the main contributors to sediment pollution. Sediments are also enriched in Zn, Cd and Pb by 1.5-3 times the regional background. Zinc, Cd and Co may pose high to very high risk to the aquatic biota due to their potential bioavailability, while Ni, As, Cu, Pb and Cr may pose medium risk at some of the investigated sites. Results emphasize the importance of using different methods for the assessment of sediment pollution at an estuarine site. (C) 2014 Elsevier Ltd. All rights reserved.
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