Probabilistic risk assessment and risk mapping of sediment metals in Sydney Harbour embayments.

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dc.contributor.authorTwining, JRen_AU
dc.contributor.authorCreighton, NMen_AU
dc.contributor.authorHollins, SEen_AU
dc.contributor.authorSzymczak, Ren_AU
dc.date.accessioned2009-08-20T05:53:24Zen_AU
dc.date.accessioned2010-04-30T05:04:29Zen_AU
dc.date.available2009-08-20T05:53:24Zen_AU
dc.date.available2010-04-30T05:04:29Zen_AU
dc.date.issued2008-11en_AU
dc.date.statistics2008-11en_AU
dc.description.abstractSediment metal concentrations in embayments of Sydney Harbour, acquired from the literature and from samples collected for this study, were used to generate contaminant probability density distributions using AQUARISK. The sediment metal concentrations often exceeded Australia's interim sediment quality guidelines. Similarly, estuarine spiked sediment toxicity test literature provided adverse biotic effects concentration data to generate species sensitivity distributions using AQUARISK. Although the harbor is subject to other inorganic and organic contamination, we have used sediment metals to demonstrate an approach for ecological risk mapping and environmental management prioritization. Sufficient spiked sediment toxicity test data were found for only three metals Cd, Cu, and Zn and some tests were likely to overestimate toxicity. The estimates of the hazardous concentration to 5% of species (the 50th percentile of the 95% species protection level) were 5, 12, and 40 mg/kg DW of total sediment metal for Cd, Cu, and Zn, respectively. These values were generally low when compared with the interim sediment quality guidelines due to the overestimation of toxic effects in the literature data. The parameters for the species sensitivity distributions have been combined with the measured sediment metal concentrations in Homebush Bay to generate risk maps of the estimated species impact for each metal as well as for all three metals collectively assuming proportional additivity. This has demonstrated the utility of comparing contaminants on a consistent scaleecological risk. © 2008, Taylor & Francis Ltd.en_AU
dc.identifier.citationTwining, J. R., Creighton, N. M., Hollins, S., & Szymczak, R. (2008). Probabilistic risk assessment and risk mapping of sediment metals in Sydney Harbour embayments. Human and Ecological Risk Assessment, 14(6), 1202-1225. doi:10.1080/10807030802494493en_AU
dc.identifier.govdoc1292en_AU
dc.identifier.issn1080-7039en_AU
dc.identifier.issue6en_AU
dc.identifier.journaltitleHuman and Ecological Risk Assessmenten_AU
dc.identifier.pagination1202-1225en_AU
dc.identifier.urihttp://dx.doi.org/10.1080/10807030802494493en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/1694en_AU
dc.identifier.volume14en_AU
dc.language.isoenen_AU
dc.publisherTaylor & Francisen_AU
dc.subjectRisk assessmenten_AU
dc.subjectHarborsen_AU
dc.subjectNew South Walesen_AU
dc.subjectSedimentsen_AU
dc.subjectMappingen_AU
dc.subjectToxicityen_AU
dc.titleProbabilistic risk assessment and risk mapping of sediment metals in Sydney Harbour embayments.en_AU
dc.typeJournal Articleen_AU
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