Distribution and speciation of metals in surface sediments of Taranto [corrected] gulf (Ionian Sea, Southern Italy)

Annali Di Chimica
Alessandro BuccolieriBianca Maria Petronio

Abstract

Concentrations of metals (Al, Fe, Ti, Ni, Mn, Cr, Zn, Cu, Pb) were determined in surface sediments from Taranto gulf (Ionian Sea, Southern Italy) in order to assess the distribution and the bioavailability of metals. Total metal content and speciation of Fe, Ni, Mn, Zn, Cu and Pb were determined. Sediment cores were also sampled in some stations of particular interest. The analytical results show that metals distribution does not show significant variations in relation to depth. Metal distribution in the Taranto gulf is mainly influenced by industrial wastes from Taranto town, by rivers of the Basilicata region and by prevailing anticlockwise marine currents. These factors cause an accumulation of metals in the sediments near to the coasts of Calabria. The statistical analysis, effected by HCA and PCA methods, can be considered a good starting point in order to classify sediment samples and to locate accumulation areas. Metal speciation shows that Fe, Ni and Zn are present in sediments mainly as sulphides, Mn is present principally in an ion-exchange form or bound to carbonate, while Cu and Pb are mainly present in the fraction bounds to humic acids.

References

Aug 21, 2002·The Science of the Total Environment·Luca Giorgio BellucciMarzia Ravanelli

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Citations

Mar 21, 2007·Environmental Monitoring and Assessment·Ermelinda PratoFrancesca Biandolino
Sep 21, 2011·Environmental Monitoring and Assessment·Saadia Rashid Tariq, Amna Bashir
Jan 16, 2007·Annali Di Chimica·Nicola CardellicchioLucia Spada
Jun 27, 2015·Environmental Science and Pollution Research International·Nicola CardellicchioLucia Spada
Nov 9, 2006·Environmental Toxicology·Carmela CaroppoRoberto Danovaro

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