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Baseline assessment of metals and hydrocarbons in the sediments of Lake Mulwala, Australia

journal contribution
posted on 2023-04-03, 18:09 authored by D. S Baldwin, J. A Howitt
Murray-Darling Freshwater Research Centre

MDFRC item.

An assessment of hydrocarbon and metal/metalloids (arsenic, cadmium, copper, lead, mercury, selenium, zinc) contamination in sediments from Lake Mulwala, Australia, was undertaken. The objectives of the study were: (i) to determine the extent of contamination in the lake sediments, compared to Australian and international sediment quality guidelines, and (ii) to attempt to identify the contaminant sources to the lake. With the exception of a few samples containing elevated levels of arsenic and/or mercury, the levels of all contaminants in the sediment samples taken from the lake were below the 'lower trigger' of the Australian Sediment Quality Guidelines that would warrant further investigation. High molecular weighthydrocarbons (up to 700 mg kg–1) were found in most sediment samples. Non-metric statistical analysis indicated that the contaminant distribution was different in different parts of the lake, with the lowest concentrations generally found at the influent to the lake. No definitive source(s) of contamination could be identified for either metalloids or hydrocarbons.

History

Publication Date

2007-07-01

Journal

Lakes & reservoirs : research and management.

Volume

12

Issue

3

Pagination

167-174

Publisher

USA: Wiley-Blackwell.

Data source

arrow migration 2023-03-15 20:45. Ref: f1b71f. IDs:['http://hdl.handle.net/1959.9/502835', 'latrobe:33325']

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