Sediment contaminants off the coast of Sydney, Australia: A model for their distribution

A baseline study of sediments along the continental shelf adjacent to Sydney was conducted in 1990–1991. The aims of this study were to identify the distribution patterns of a range of inorganic and organic contaminants and to place these distributions in the context of both local sources and sedime...

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Bibliographic Details
Published in:Marine pollution bulletin 1995-04, Vol.31 (4), p.262-272
Main Authors: Schneider, P.M., Davey, S.B.
Format: Article
Language:English
Subjects:
Applied sciences
Biological and physicochemical properties of pollutants. Interaction in the soil
Exact sciences and technology
Marine
Pollution
Soil and sediments pollution
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Summary:A baseline study of sediments along the continental shelf adjacent to Sydney was conducted in 1990–1991. The aims of this study were to identify the distribution patterns of a range of inorganic and organic contaminants and to place these distributions in the context of both local sources and sediment/contaminant relationships. The baseline study identified three spatially discrete, shore parallel zones of contaminants. Highest contaminant concentrations occurred in a zone 2–4 km offshore, with lower concentrations occurring in zones less than 2 km and more than 4 km from the coast. Stepwise multiple regression models were used to identify and quantify heavy-metal/geochemical associations. Heavy-metal distributions in sediments were principally related to Fe content, organic carbon content and water depth. Weaker associations were also found with Mn, carbonate content and fine-sized particles (
ISSN:0025-326X
1879-3363
DOI:10.1016/0025-326X(95)00176-N