Document Detail


Volcanic and anthropogenic contribution to heavy metal content in lichens from Mt. Etna and Vulcano island (Sicily).
MedLine Citation:
PMID:  15092945     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
Major and trace element concentrations were determined in two lichen species (Parmelia conspersa and Xanthoria calcicola) from the island of Vulcano and all around Mt. Etna. In both areas, the average concentrations of Al, Ca, Mg, Fe, Na, K, P and Ti are substantially greater than those of other elements. Several elements (Br, Pb, Sb, Au, Zn, Cu) resulted enriched with respect to the local substrates. The Br and Pb enrichment factors turned out to be the highest among those calculated in both areas. Data indicate that mixing between volcanic and automotive-produced particles clearly explains the range of Pb/Br shown by lichen samples. Sb is also enriched, revealing a geogenic origin at Vulcano and a prevailing anthropic origin at Mt. Etna. Distribution maps of the enrichment factors show a generalized enrichment of Au and Zn near Mt. Etna, whereas Cu appears to be enriched prevalently in the NE-SE area. The highest levels of Au and Cu at Vulcano occur E-SE from the craters, following the prevailing wind direction.
Authors:
D Varrica; A Aiuppa; G Dongarrà
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Environmental pollution (Barking, Essex : 1987)     Volume:  108     ISSN:  0269-7491     ISO Abbreviation:  Environ. Pollut.     Publication Date:  2000 May 
Date Detail:
Created Date:  2004-04-19     Completed Date:  2004-05-10     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8804476     Medline TA:  Environ Pollut     Country:  England    
Other Details:
Languages:  eng     Pagination:  153-62     Citation Subset:  -    
Affiliation:
Dipartimento C.F.T.A., Università di Palermo, via Archirafi 36, 90123 Palermo, Italy.
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