BENTHIC FLUXES MEASUREMENT OF MERCURY AND METHYLMERCURY IN PIALASSA BAIONA (RAVENNA, ITALY)

Covelli, Stefano; Department Of Geosciences, University Of Trieste, Trieste, Emili, Andrea; Department Of Geosciences, University Of Trieste, Trieste, Acquavita, Alessandro; Environ. Prot. Agency Of Friuli Venezia Giulia (ARPA FVG), Palmanova, Dinelli, Enrico; Interdip. Center For Research On Environ. Sci. (CIRSA), University Of Bologna, Bologna, Koron, Neža; Marine Biological Station, Na-Tional Institute Of Biology, Piran & Faganeli, Jadran; Marine Biological Station, Na-Tional Institute Of Biology, Piran
Previous research on mercury (Hg) showed strong contamination of the Piallassa Baiona (P.B.) lagoon, near Ravenna. The lagoon received between 100 and 200 tons of Hg generated by an acetaldehyde factory in 1957-1977. In this study, the Hg cycling at the sediment-water interface in the P.B. lagoon was investigated by means of an in situ benthic chamber. The 8-h integrated flux of the methylated form was extremely low and estimated to be only 7% of...