title: Temporal trends and bioavailability assessment of heavy metals in the sediments of Deception Bay, Queensland, Australia.
abstract: Thirteen sites in Deception Bay, Queensland, Australia were sampled three times over a period of 7 months and assessed for contamination by a range of heavy metals, primarily As, Cd, Cr, Cu, Pb and Hg. Fraction analysis, enrichment factors and Principal Components Analysis-Absolute Principal Component Scores (PCA-APCS) analysis were conducted in order to identify the potential bioavailability of these elements of concern and their sources. Hg and Te were identified as the elements of highest enrichment in Deception Bay while marine sediments, shipping and antifouling agents were identified as the sources of the Weak Acid Extractable Metals (WE-M), with antifouling agents showing long residence time for mercury contamination. This has significant implications for the future of monitoring and regulation of heavy metal contamination within Deception Bay.
authors.affiliation: Queensland University of Technology, Science and Engineering Faculty, School of Chemistry, Physics and Mechanical Engineering, GPO Box 2434, Brisbane, QLD 4001, Australia.
authors.forename: James P
authors.initials: JP
authors.lastname: Brady
authors.affiliation: Queensland University of Technology, Science and Engineering Faculty, School of Chemistry, Physics and Mechanical Engineering, GPO Box 2434, Brisbane, QLD 4001, Australia. Electronic address: g.ayoko@qut.edu.au.
authors.forename: Godwin A
authors.initials: GA
authors.lastname: Ayoko
authors.affiliation: Queensland University of Technology, Science and Engineering Faculty, School of Chemistry, Physics and Mechanical Engineering, GPO Box 2434, Brisbane, QLD 4001, Australia.
authors.forename: Wayde N
authors.initials: WN
authors.lastname: Martens
authors.affiliation: Queensland University of Technology, Science and Engineering Faculty, GPO Box 2434, Brisbane, QLD 4001, Australia.
authors.forename: Ashantha
authors.initials: A
authors.lastname: Goonetilleke
mesh_terms: D059001:Aquatic Organisms / Q000378:metabolism*; D061006:Bays; D001682:Biological Availability; D004784:Environmental Monitoring; D019015:Geologic Sediments / Q000737:chemistry*; D019216:Metals, Heavy / Q000032:analysis / Q000493:pharmacokinetics*; D025341:Principal Component Analysis; D011793:Queensland; D012621:Seasons; D014874:Water Pollutants, Chemical / Q000032:analysis / Q000493:pharmacokinetics*
chemical_list: D019216:Metals, Heavy; D014874:Water Pollutants, Chemical
keywords: Deception Bay; Fraction analysis; Heavy metal distribution; Heavy metal enrichment; Heavy metal pollution; Source apportionment