PMID: 9525046Apr 3, 1998Paper

Trace metals in oysters and sediments of Botany Bay, Sydney

The Science of the Total Environment
W J HayesJ Hurtado

Abstract

Trace metal concentrations (Pb, Cd, Cu and Zn) in Sydney rock oysters (Sacostera commercialis) and sediments (< 53 microns fraction) were determined for six sites in the northern regions of Botany Bay. Levels for lead, cadmium, copper and zinc in oysters ranged (in microgram g-1) from 1.38 to 15.3, 1.81 to 16.3, 56.1 to 212 and 1806 to 2902, respectively. In sediments, levels ranged (in microgram g-1) from 599 to 4081, 3.57 to 91.0, 191 to 1113 and 227 to 1472, respectively. Such values indicated high levels of contamination, especially in the sediments. Indeed, high proportions of the samples displayed metal concentrations that exceeded the prescribed limits for oysters and sediments. No significant correlations in metal concentrations were found between oysters and sediments, suggesting that changes in the sediment metal loading are not solely influencing the levels of bioavailable metal. The results supported the conclusion that different rates and mechanisms of metal accumulation are taking place in the two types of samples. Variability between sites was high, particularly for oysters. Multidimensional scaling identified that the Cooks River (site 3) and La Perouse (site 6) sites were most dissimilar, both to each other as ...Continue Reading

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Citations

May 18, 2006·Environmental Monitoring and Assessment·Barrie M PeakeAshley M Bryan
Oct 11, 2003·Marine Pollution Bulletin·Mauro de Freitas RebeloWolfgang Chritstian Pfeiffer
Oct 24, 2007·The Science of the Total Environment·R G Richards, M Chaloupka
May 12, 2011·Environmental Toxicology and Chemistry·Wen-Xiong WangCaihuan Ke
Oct 19, 2010·Environmental Pollution·G F Birch, T D Hogg
Mar 6, 2009·Marine Pollution Bulletin·L H HedgeE L Johnston
Jan 17, 2012·Journal of Environmental Monitoring : JEM·Mailie L GallEmma L Johnston

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