Chemical speciation and heavy metal mobility in contaminated marine sediments

Damikouka, I; Katsiri, A

dc.contributor.author	Damikouka, I	en
dc.contributor.author	Katsiri, A	en
dc.date.accessioned	2014-03-01T01:58:34Z
dc.date.available	2014-03-01T01:58:34Z
dc.date.issued	2009	en
dc.identifier.issn	1546962X	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/28689
dc.subject	Elutriation test	en
dc.subject	Heavy metals	en
dc.subject	Marine sediments	en
dc.subject	Sequential extraction	en
dc.subject.other	Anoxic conditions	en
dc.subject.other	Binding fraction	en
dc.subject.other	Binding phasis	en
dc.subject.other	Coastal area	en
dc.subject.other	Concentration of	en
dc.subject.other	Contaminated marine sediments	en
dc.subject.other	Critical issues	en
dc.subject.other	Environmental conditions	en
dc.subject.other	Fractionation analysis	en
dc.subject.other	Management decisions	en
dc.subject.other	Marine sediments	en
dc.subject.other	Metal mass	en
dc.subject.other	Metal mobility	en
dc.subject.other	Organic matter	en
dc.subject.other	Organic substances	en
dc.subject.other	Oxic conditions	en
dc.subject.other	Piraeus	en
dc.subject.other	Pollutant concentration	en
dc.subject.other	Polluted sediments	en
dc.subject.other	Sequential extraction	en
dc.subject.other	Sequential extraction procedure	en
dc.subject.other	Biogeochemistry	en
dc.subject.other	Biological materials	en
dc.subject.other	Chemical speciation	en
dc.subject.other	Coastal zones	en
dc.subject.other	Copper oxides	en
dc.subject.other	Dissolution	en
dc.subject.other	Iron oxides	en
dc.subject.other	Lead	en
dc.subject.other	Lead oxide	en
dc.subject.other	Metal recovery	en
dc.subject.other	Metals	en
dc.subject.other	Organic compounds	en
dc.subject.other	Positive ions	en
dc.subject.other	Seawater	en
dc.subject.other	Sedimentology	en
dc.subject.other	Sediments	en
dc.subject.other	Submarine geology	en
dc.subject.other	Zinc	en
dc.subject.other	Soil pollution	en
dc.title	Chemical speciation and heavy metal mobility in contaminated marine sediments	en
heal.type	journalArticle	en
heal.identifier.primary	10.1520/JAI102169	en
heal.identifier.secondary	http://dx.doi.org/10.1520/JAI102169	en
heal.publicationDate	2009	en
heal.abstract	Management of sediments from coastal areas, contaminated with heavy metals and organic substances, is a very critical issue. Management decisions are usually based on total pollutant concentrations and various guidelines that are used by different countries. Heavy metals can be mobilized from polluted sediments if they are exposed to changing environmental conditions that occur during excavation, disposal at sea, or disposal in confined facilities. This paper examines the changes in heavy metals partitioning to binding phases in contaminated marine sediments and the release of metals to the environment. Environmental conditions are simulated by submitting sediments to a modified elutriation test with oxygenated and deoxygenated seawater. A sequential extraction procedure is used to determine the binding fractions of heavy metals in the sediments. Fractionation analysis of excavated marine sediments from the port of Piraeus, Greece showed that copper is primarily associated with organic matter, whereas lead and zinc are primarily associated with iron oxides. Under anoxic conditions, the metals bound to the various binding fractions remain practically stable. On the other hand, under oxic conditions, an increase in the concentration of metals associated with carbonates and a decrease in the concentration of metals associated with organic matter and iron oxides were observed. Both under oxic and anoxic conditions, actual metal mobility was very low and less than 0.5 % of total metal mass was found in the dissolved phase. Copyright © 2009 by ASTM International.	en
heal.journalName	Journal of ASTM International	en
dc.identifier.doi	10.1520/JAI102169	en
dc.identifier.volume	6	en
dc.identifier.issue	6	en