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A study of metal and metalloid contaminant availability in Antarctic marine sediments
Citation
Larner, BL and Seen, AJ and Palmer, AS and Snape, I, A study of metal and metalloid contaminant availability in Antarctic marine sediments, Chemosphere, 67, (10) pp. 1967-1974. ISSN 0045-6535 (2007) [Refereed Article]
DOI: doi:10.1016/j.chemosphere.2006.11.059
Abstract
Previous studies of impacted sites near Casey Station, Antarctica, have revealed elevated concentrations of metals and metalloids, particularly Cd, Cu, Fe, Pb, Sn and Zn in marine sediments. However, attempts to understand the availability and mobility of contaminant elements have not provided a true understanding of speciation. The current work shows, for the first time, that sediments in Brown Bay, an embayment adjacent to the Thala Valley waste disposal site, have elevated concentrations of sulfide, well in excess of that required to bind contaminant metals such as Cd, Cu, Pb and Zn. Furthermore, sediment characterisation using the BCR sequential extraction scheme has shown metal partitioning consistent with sulfides being the controlling factor in metal availability, thus explaining the low porewater concentrations of these metals. The speciation of Sn in Brown Bay, however, is still unclear with the BCR sequential extraction scheme partitioning Sn predominantly into the residual fraction despite Sn being readily extracted by dilute HCl. © 2006 Elsevier Ltd. All rights reserved.
Item Details
Item Type: | Refereed Article |
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Research Division: | Earth Sciences |
Research Group: | Atmospheric sciences |
Research Field: | Atmospheric composition, chemistry and processes |
Objective Division: | Environmental Management |
Objective Group: | Other environmental management |
Objective Field: | Other environmental management not elsewhere classified |
UTAS Author: | Larner, BL (Miss Bronwyn Larner) |
UTAS Author: | Seen, AJ (Associate Professor Andrew Seen) |
UTAS Author: | Palmer, AS (Dr Anne Palmer) |
ID Code: | 50973 |
Year Published: | 2007 |
Web of Science® Times Cited: | 18 |
Deposited By: | Chemistry |
Deposited On: | 2007-08-01 |
Last Modified: | 2009-09-21 |
Downloads: | 0 |
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