Characterization of the Etna volcanic emissions through an active biomonitoring technique (moss-bags): Part 1 – Major and trace element composition

•First study of volcanic emissions by using moss-bags.•The concentration of trace metals in mosses increased significantly after exposure.•High levels of toxic trace elements were found in summit and downwind areas of Etna.•Tl was the most enriched element in exposed moss-bags with respect to the mo...

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