Mobility of heavy metals from polluted sediments of a semi-enclosed basin: in situ benthic chamber experiments in Taranto's Mar Piccolo (Ionian Sea, Southern Italy)

Environmental Science and Pollution Research International
Andrea EmiliNicola Cardellicchio

Abstract

In situ benthic flux experiments were conducted at two stations in the Mar Piccolo of Taranto (Italy), one of the most industrialised and contaminated coastal areas of the Mediterranean. Sediments of the two stations are notably different in their trace metal content, with a station closer to a Navy harbour showing higher mean concentrations of almost all investigated metals (Al, As, Cd, Cr, Cu, Fe, Hg, Mn, Ni, Pb, V and Zn). Conversely, both stations are characterised by significant Hg contamination, compared to the local baseline. Results of a sequential extraction scheme on surface sediments suggest a relatively scarce mobility of the examined metals (Zn > Ni > Cr > As > Cu > Pb). A Hg-specific extraction procedure showed that most of the element (93.1 %) occurs in a fraction comprising Hg bound to Fe/Mn oxi-hydroxides. Reduction of these oxides may affect Hg remobilisation and redistribution. Porewater profiles of dissolved trace metals were quite similar in the two sites, although significant differences could be observed for Al, Cu, Fe and Hg. The highest diffusive fluxes were observed for As, Fe and Mn. Mobility rates of several trace elements (Al, As, Cd, Cr, Cu, Fe, Hg, Mn, Ni, Pb, V and Zn) were directly measured at t...Continue Reading

References

Jan 25, 2005·Marine Pollution Bulletin·Marco RamirezJuan A Correa
Mar 1, 2005·Environment International·Jian-Bo ShiXing-Long Jin
Jan 16, 2007·Annali Di Chimica·Nicola CardellicchioLucia Spada
Aug 19, 2007·Marine Environmental Research·E Shoham-FriderN Kress
Jan 12, 2010·Marine Pollution Bulletin·Andrew Turner
Oct 5, 2011·International Journal of Hygiene and Environmental Health·Lucia SpadaAntonella Di Leo
Mar 3, 2015·The Science of the Total Environment·Linda H KalnejaisMichael H Bothner
Jul 15, 2015·Environmental Science and Pollution Research International·Cinzia De VittorAndrea Emili

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Citations

Jul 15, 2015·Environmental Science and Pollution Research International·Cinzia De VittorAndrea Emili
May 18, 2016·Environmental Science and Pollution Research International·Nicola CardellicchioTamara Cibic
Aug 30, 2019·Environmental Science and Pollution Research International·Malgorzata M FormalewiczDaniela Berto
Dec 31, 2019·Environmental Science and Pollution Research International·Nuša CukrovNeven Cukrov
Jul 26, 2017·Environmental Science and Pollution Research International·Behnam Heidari ChaharlangParvin Farshchi
Jul 15, 2018·Environmental Science and Pollution Research International·Elisa PetranichStefano Covelli
Apr 19, 2020·Environmental Science and Pollution Research International·Raima MehmoodJennifer Weidhaas

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