Abstract:
:Sources and transport processes of As, Cu, Cd and Pb were studied in different environmental compartments of Deception Island, an active volcano in the South Shetland Islands, Antarctica. Element concentrations in fresh water samples are consistent with the lowest values reported elsewhere in Antarctica. Interestingly, higher concentration values of As were found in samples collected in or near spring water courses and its transport may be related with processes of lixiviation in underground waters. While in saline waters Cu and Pb had important punctual sources, concentration values for Cd were consistently high pointing to the existence of a natural and diffuse source possibly related with the hydrothermal activity. The high Si/Al ratio, low carbon content, and a non-significant anthropogenic heavy metal input may explain the surprisingly homogeneous heavy metal content found in sediment samples.
journal_name
Mar Pollut Bulljournal_title
Marine pollution bulletinauthors
Mão de Ferro A,Mota AM,Canário Jdoi
10.1016/j.marpolbul.2013.08.037subject
Has Abstractpub_date
2013-12-15 00:00:00pages
341-8issue
1-2eissn
0025-326Xissn
1879-3363pii
S0025-326X(13)00530-4journal_volume
77pub_type
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