La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Volcanic and anthropic rnetal pollution rnonitored by lichens - two case studies: Mt. Etna and Augusta (Sicily)
Auteurs :	Roberto Clocchiatti, Auteur ; Francine Carrot, Auteur ; Agnes Michel, Auteur ; M. Felicia Grasso, Auteur ; Maria Grillo, Auteur
Type de document :	Article
Dans :	Ecologia Mediterranea (28(1) 2002)
Article en page(s) :	65-73
Résumé :	We have determined fifteen trace elements with ICP-MS (Inductively Coupled Plasma-Mass Spectrometer) in lichens from Etna volcano and in the vicinity of the Augusta (Sicily) oil refinery. The latter are enriched in Pb, Zn, Sn, Co, Mo, Ag, Cs, As, Bi, and Cu relative to their limestone substrate whereas Etna lichens are enriched in Sb, Se, Pb, Zn, and Bi relative to lavas. The Augusta specimens have overall trace concentrations that arefive-fold higher than the etnean samples. Enrichment factors relative to the substratum are 10 to 100 fold higher in lichens next the rafinery than in those of the volcanic area. Locally over Sicily, the volcano is much less of a nuisance than human industry.

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