|Title||Mercury levels in sediments of central Mediterranean Sea: A 150+ year record from box-cores recovered in the Strait of Sicily|
|Publication Type||Articolo su Rivista peer-reviewed|
|Year of Publication||2006|
|Authors||Leonardo, R.D., Tranchida G., Bellanca A., Neri R., Angelone Massimo, and Mazzola S.|
|Keywords||210Pb chronology, anthropogenic effect, anthropogenic source, article, Atlantic Ocean, background level, Box core sediments, chronology, concentration (composition), concentration process, Field emission, Geochemistry, Geologic Sediments, Geothermal energy, lead 210, Marine pollution, marine sediment, Mediterranean Sea, mercury, mercury (element), Mercury (metal), mineralogy, Morphology, sea pollution, sediment, Sediments, Strait of Sicily, volcano, water sampling|
To evaluate the degree of anthropogenic mercury pollution, Hg contents have been measured for box-core sediments sampled along three nearshore-offshore transects in the Strait of Sicily and well constrained for their mineralogy, bulk geochemistry and TOC%. Hg values are generally low (from 15 to 70 μg kg-1); however, depth profiles clearly display upcore rising concentrations (up to 202 μg kg-1 near the SE Sicily coast) that are attributed to anthropogenic load. Based on 210Pb chronology, these trends are more dramatic across the last 20-30 years. Geogenic influence is thought to explain some anomalies related to volcanic emission and geothermal activity. Combined effects due to eastward flowing of the Modified Atlantic Water (MAW) and sea bottom morphology drove major anthropogenic accumulation. © 2006.
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