Recent contamination of mercury in an estuarine environment (Marano lagoon,Northern Adriatic,Italy) |
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| Authors: | Stefano Covelli Alessandro Acquavita Raffaella Piani Sergio Predonzani Cinzia De Vittor |
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| Institution: | 1. Dipartimento di Scienze Geologiche, Ambientali & Marine, Università di Trieste, Via E. Weiss 2, 34127 Trieste, Italy;2. ARPA-FVG, Agenzia Regionale per la Protezione dell''Ambiente del Friuli-Venezia Giulia, Osservatorio Alto Adriatico, Via Cairoli 14, 33057 Palmanova (Udine), Italy;3. Dipartimento di Oceanografia Biologica, Istituto Nazionale di Oceanografia e Geofisica Sperimentale, Via A. Piccard 54, 34014 Trieste, Italy |
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| Abstract: | The Marano Lagoon, in the northern Adriatic Sea (Italy), has been affected by mercury (Hg) contamination from industrial and mining activities. It has been estimated that 186,000 kg of Hg were deliberately discharged into the main drainage system (Aussa–Corno River) by a chlor-alkali plant (CAP) from 1940s to 1984. The lagoon has also experienced a secondary long-term Hg input, originated from mining activity in Idrija (Slovenia), due to the supply of fluvial suspended particles carried by the Isonzo River in the Gulf of Trieste. Since local fishing activities are extensively conducted, there is great concern on the risk posed by potentially harmful effects of Hg to the trophic chain. |
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| Keywords: | mercury chlor-alkali estuary biogeochemical cycling total suspended matter sediments |
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