Bioaccumulation of Potentially Toxic Trace Elements in Benthic Organisms from Admiralty Bay, King George Island, Antarctica

A. Majer, M. Petti, T. N. Corbisier, A. P. Ribeiro, C. Y. S. Theophilo, R. Figueira
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引用次数: 53

Abstract

e bioaccumulation of trace elements is de ned as the uptake of a chemical by an organism from the abiotic and/or biotic (food) environment, and is a widely observed and very important process considering the impact assessment of anthropogenic activities. In Antarctica the main local source of metal and metalloid is related to the activities of research stations. In order to verify the contribution of the Comandante Ferraz Brazilian Antarctica Station (EACFPortuguese acronym, in continuity) in the accumulation of these elements, and to supply baseline values to allow future monitoring, the concentration of Ag, As, Cd, Cu, Ni, Pb and Zn was measured in twelve benthic Antarctic species (Desmarestia sp, Himantothallus grandifolius, Laternula elliptica, Yoldia eightsi, Amphioplus acutus, Bovalia gigantea, Gondogeneia antarctica, Sterechinus neumayeri, Nacella concinna, Paraserolis polita, Parborlasia corrugatus and Glyptonotus antarcticus). A wide variation in metal content was observed depending on the species and the element. ese concentrations were usually lower than those of other Antarctic areas, not indicating relevant anthropogenic impacts of EACF. However, considering the serious re incident that occurred at the end of last summer (February/2012), and that relevant measures of heavy metals (such as Pb, Cd, and Zn) are released in this kind of event, this data, and the associated methodology, attains particular importance, due to their potential to enlighten the extension of this impact, as well as, the success of any recuperation strategy.
南极乔治王岛金钟湾底栖生物中潜在有毒微量元素的生物积累
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