A study of metal and metalloid contaminant availability in Antarctic marine sediments
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 tru...
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Online Access: | https://eprints.utas.edu.au/3961/ https://eprints.utas.edu.au/3961/1/3961.pdf https://doi.org/10.1016/j.chemosphere.2006.11.059 |
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ftunivtasmania:oai:eprints.utas.edu.au:3961 2023-05-15T13:31:52+02:00 A study of metal and metalloid contaminant availability in Antarctic marine sediments Larner, BL Seen, AJ Palmer, AS Snape, I 2007 application/pdf https://eprints.utas.edu.au/3961/ https://eprints.utas.edu.au/3961/1/3961.pdf https://doi.org/10.1016/j.chemosphere.2006.11.059 en eng Pergamon-Elsevier https://eprints.utas.edu.au/3961/1/3961.pdf Larner, BL, Seen, AJ, Palmer, AS and Snape, I 2007 , 'A study of metal and metalloid contaminant availability in Antarctic marine sediments' , Chemosphere, vol. 67, no. 10 , pp. 1967-1974 , doi:10.1016/jchemosphere.2006.11.059 <http://dx.doi.org/10.1016/jchemosphere.2006.11.059>. 259902 Environmental Chemistry (incl. Atmospheric Chemistry) Brown Bay Metal and metalloid contaminants BCR sequential extraction Partial extraction AVS Article PeerReviewed 2007 ftunivtasmania https://doi.org/10.1016/j.chemosphere.2006.11.059 https://doi.org/10.1016/jchemosphere.2006.11.059 2021-05-10T22:16:27Z 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. Article in Journal/Newspaper Antarc* Antarctic Antarctica University of Tasmania: UTas ePrints Antarctic Brown Bay ENVELOPE(110.550,110.550,-66.278,-66.278) Casey Station ENVELOPE(110.528,110.528,-66.282,-66.282) Thala Valley ENVELOPE(110.536,110.536,-66.280,-66.280) Chemosphere 67 10 1967 1974 |
institution |
Open Polar |
collection |
University of Tasmania: UTas ePrints |
op_collection_id |
ftunivtasmania |
language |
English |
topic |
259902 Environmental Chemistry (incl. Atmospheric Chemistry) Brown Bay Metal and metalloid contaminants BCR sequential extraction Partial extraction AVS |
spellingShingle |
259902 Environmental Chemistry (incl. Atmospheric Chemistry) Brown Bay Metal and metalloid contaminants BCR sequential extraction Partial extraction AVS Larner, BL Seen, AJ Palmer, AS Snape, I A study of metal and metalloid contaminant availability in Antarctic marine sediments |
topic_facet |
259902 Environmental Chemistry (incl. Atmospheric Chemistry) Brown Bay Metal and metalloid contaminants BCR sequential extraction Partial extraction AVS |
description |
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. |
format |
Article in Journal/Newspaper |
author |
Larner, BL Seen, AJ Palmer, AS Snape, I |
author_facet |
Larner, BL Seen, AJ Palmer, AS Snape, I |
author_sort |
Larner, BL |
title |
A study of metal and metalloid contaminant availability in Antarctic marine sediments |
title_short |
A study of metal and metalloid contaminant availability in Antarctic marine sediments |
title_full |
A study of metal and metalloid contaminant availability in Antarctic marine sediments |
title_fullStr |
A study of metal and metalloid contaminant availability in Antarctic marine sediments |
title_full_unstemmed |
A study of metal and metalloid contaminant availability in Antarctic marine sediments |
title_sort |
study of metal and metalloid contaminant availability in antarctic marine sediments |
publisher |
Pergamon-Elsevier |
publishDate |
2007 |
url |
https://eprints.utas.edu.au/3961/ https://eprints.utas.edu.au/3961/1/3961.pdf https://doi.org/10.1016/j.chemosphere.2006.11.059 |
long_lat |
ENVELOPE(110.550,110.550,-66.278,-66.278) ENVELOPE(110.528,110.528,-66.282,-66.282) ENVELOPE(110.536,110.536,-66.280,-66.280) |
geographic |
Antarctic Brown Bay Casey Station Thala Valley |
geographic_facet |
Antarctic Brown Bay Casey Station Thala Valley |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_relation |
https://eprints.utas.edu.au/3961/1/3961.pdf Larner, BL, Seen, AJ, Palmer, AS and Snape, I 2007 , 'A study of metal and metalloid contaminant availability in Antarctic marine sediments' , Chemosphere, vol. 67, no. 10 , pp. 1967-1974 , doi:10.1016/jchemosphere.2006.11.059 <http://dx.doi.org/10.1016/jchemosphere.2006.11.059>. |
op_doi |
https://doi.org/10.1016/j.chemosphere.2006.11.059 https://doi.org/10.1016/jchemosphere.2006.11.059 |
container_title |
Chemosphere |
container_volume |
67 |
container_issue |
10 |
container_start_page |
1967 |
op_container_end_page |
1974 |
_version_ |
1766021539280453632 |