Baseline concentrations, spatial distribution and origin of trace elements in marine surface sediments of the northern Antarctic Peninsula

Louise J Delhaye, Marc Elskens, Constanza Ricaurte-Villota, Luis Cerpa, Marc Kochzius

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

Increased human activity in the Antarctic Peninsula combined with accelerated melting of its glaciers highlights the importance of monitoring trace element concentrations. Surface sediment samples were collected around King George Island, Hope Bay and in the Bransfield Strait in February 2020 and were analysed by X-ray fluorescence spectroscopy and inductively coupled plasma mass spectrometry. The methods display a good correlation. Our results show clear distinctions between these regions for selected elements with high local heterogeneities. Hope Bay exhibited lower concentrations of Fe, Mn, Co, V, Zn while most stations in the Bransfield Strait and around King George Island showed moderate to significant enrichment in Cu, As and Cd. Twelve stations presented a moderate ecological risk. The consistency of our values supports a natural rather than anthropogenic origin, possibly related to volcanism and the geology of the area. However, our results suggest an increase in Cr that should be further investigated.

Original languageEnglish
Article number114501
Number of pages9
JournalMarine Pollution Bulletin
Volume187
Early online date28 Dec 2022
DOIs
Publication statusPublished - Feb 2023

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