Analysis of mercury and other heavy metals accumulated in lichen Usnea antarctica from James Ross Island, Antarctica

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Publikace nespadá pod Ekonomicko-správní fakultu, ale pod Přírodovědeckou fakultu. Oficiální stránka publikace je na webu muni.cz.
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ZVĚŘINA Ondřej LÁSKA Kamil ČERVENKA Rostislav KUTA Jan COUFALÍK Pavel KOMÁREK Josef

Rok publikování 2014
Druh Článek v odborném periodiku
Časopis / Zdroj Environmental Monitoring and Assessment
Fakulta / Pracoviště MU

Přírodovědecká fakulta

Citace
www http://link.springer.com/article/10.1007/s10661-014-4068-z
Doi http://dx.doi.org/10.1007/s10661-014-4068-z
Obor Analytická chemie, separace
Klíčová slova Antarctica; Heavy metal; Mercury; Lichen
Popis The study was designed to investigate the content and distribution of selected heavy metals (As, Cd, Co, Cr, Cu, Hg, Mn, Ni, Fe, Pb and Zn) in samples of fruticose macrolichen Usnea antarctica from James Ross Island. A special emphasis was devoted to mercury and its species (elemental mercury and methylmercury). It was found that mercury contents were relatively high (up to 2.73 mg/kg dry weight) compared to other parts of the Antarctic Peninsula region, while the concentrations of most other elements were within reported ranges. Mercury contents in lichens originating from the interior were higher than those from the coast, which is probably the result of local microclimate conditions. Similar trends were observed for Hg0 and MeHg+, whose contents were up to 0.14 and 0.098 mg/kg dry weight, respectively. While mercury did not show a significant correlation with any other element, the mutual correlation of some litophile elements probably refers to the influence on thalli of resuspended weathered material. The influence of habitat and environmental conditions could play an essential role in the bioaccumulation of contaminants rather than just the simple presence of sources. Thus, the study of the thalli of this species can bring a new perspective on the interpretation of contaminant accumulation in lichens of the polar region.
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