The contents and distributions of cadmium, mercury, and lead in Usnea antarctica lichens from Solorina Valley, James Ross Island (Antarctica)
Jazyk angličtina Země Nizozemsko Médium electronic
Typ dokumentu časopisecké články
PubMed
29230543
DOI
10.1007/s10661-017-6397-1
PII: 10.1007/s10661-017-6397-1
Knihovny.cz E-zdroje
- Klíčová slova
- Antarctica, Biomonitoring, Heavy metals, Lichen,
- MeSH
- Ascomycota MeSH
- chinolony MeSH
- kadmium analýza MeSH
- kovy analýza MeSH
- látky znečišťující vzduch analýza MeSH
- lišejníky chemie MeSH
- monitorování životního prostředí metody MeSH
- olovo analýza MeSH
- ostrovy MeSH
- rtuť analýza MeSH
- spektrofotometrie atomová MeSH
- Usnea chemie MeSH
- Publikační typ
- časopisecké články MeSH
- Geografické názvy
- Antarktida MeSH
- ostrovy MeSH
- Názvy látek
- chinolony MeSH
- kadmium MeSH
- kovy MeSH
- látky znečišťující vzduch MeSH
- olovo MeSH
- rosoxacin MeSH Prohlížeč
- rtuť MeSH
Lichens are efficient and cost-effective biomonitors of the environment. Their geographic distribution together with their slow growth rate enable investigation of the deposition patterns of various elements and substances. In this research, levels of cadmium, lead, and mercury in Usnea antarctica lichens in the area of James Ross Island, Antarctica, were investigated. The lichens were microwave-digested, and the metals were determined by means of atomic absorption spectrometry with graphite furnace and a direct mercury analyzer. Median total contents of Cd, Hg, and Pb were 0.04, 0.47, and 1.6 mg/kg in whole lichens, respectively. The bottom-up distributions of these metals in the fruticose lichen thalli were investigated, and it was revealed that the accumulation patterns for mercury and lead were opposite to that for cadmium. The probable reason for this phenomenon may lie in the inner structure of thalli. The total contents of metals were comparable with those published for other unpolluted areas of maritime Antarctica. However, this finding was not expected for mercury, since the sampling locality was close to an area with some of the highest mercury contents published for Antarctic lichens. In short, lichens proved their usability as biological monitors, even in harsh conditions. However, the findings emphasize the need to take into account the distributions of elements both in the environment and in the lichen itself.
Department of Chemistry Faculty of Science Masaryk University Kotlářská 2 61137 Brno Czech Republic
TESCAN Brno s r o Libušina třída 1 623 00 Brno Czech Republic
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