Pollutant trends and hazard ranking in Elefsis Bay, Greece

Pantazidou, M; Kapniaris, S; Katsiri, A; Christidis, A

dc.contributor.author	Pantazidou, M	en
dc.contributor.author	Kapniaris, S	en
dc.contributor.author	Katsiri, A	en
dc.contributor.author	Christidis, A	en
dc.date.accessioned	2014-03-01T01:26:55Z
dc.date.available	2014-03-01T01:26:55Z
dc.date.issued	2007	en
dc.identifier.issn	0011-9164	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/18281
dc.subject	Elefsis Bay	en
dc.subject	Hazard ranking	en
dc.subject	Sediment contamination	en
dc.subject.classification	Engineering, Chemical	en
dc.subject.classification	Water Resources	en
dc.subject.other	Chromium	en
dc.subject.other	Copper	en
dc.subject.other	Impurities	en
dc.subject.other	Lead	en
dc.subject.other	Seawater	en
dc.subject.other	Water pollution	en
dc.subject.other	Water quality	en
dc.subject.other	Zinc	en
dc.subject.other	Elefsis Bay	en
dc.subject.other	Hazard ranking	en
dc.subject.other	Pollutant distributions	en
dc.subject.other	Sediment contamination	en
dc.subject.other	Water analysis	en
dc.subject.other	Chromium	en
dc.subject.other	Copper	en
dc.subject.other	Impurities	en
dc.subject.other	Lead	en
dc.subject.other	Seawater	en
dc.subject.other	Water analysis	en
dc.subject.other	Water pollution	en
dc.subject.other	Water quality	en
dc.subject.other	Zinc	en
dc.subject.other	chromium	en
dc.subject.other	copper	en
dc.subject.other	environmental impact	en
dc.subject.other	hazard assessment	en
dc.subject.other	lead	en
dc.subject.other	marine pollution	en
dc.subject.other	sampling	en
dc.subject.other	seawater	en
dc.subject.other	water quality	en
dc.subject.other	zinc	en
dc.subject.other	Aegean Sea	en
dc.subject.other	Elefsis Gulf	en
dc.subject.other	Eurasia	en
dc.subject.other	Europe	en
dc.subject.other	Greece	en
dc.subject.other	Mediterranean Sea	en
dc.subject.other	Southern Europe	en
dc.title	Pollutant trends and hazard ranking in Elefsis Bay, Greece	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.desal.2006.05.034	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.desal.2006.05.034	en
heal.language	English	en
heal.publicationDate	2007	en
heal.abstract	This study investigates the trends in pollutant distributions in Elefsis Bay and establishes an approach to rank contaminants according to their potential hazard. Sampling locations include points along the coast and within the bay. The investigation focuses on four metals, lead (Pb), zinc (Zn), chromium (Cr) and copper (Cu). Temporal trends are investigated by comparing average yearly concentrations for an 18-year long record. Only Cr in seawater exhibits a clear decreasing trend, both at the coast and within the bay. Spatial trends are studied by plotting average yearly concentrations along the coast for every year in the record. Only Cr exhibits systematically peak concentrations in water samples close to a stream outfall and periodic peaks in the sediment at the same location. Periodic peaks of Cu, Zn and Pb are also detected in both water and sediment samples obtained close to the two shipyards of Elefsis Bay. A comparative study of spatial trends confirms that the areas by the two shipyards are the most heavily impacted. Finally, the four metals are ranked by defining a hazard index as the ratio of the 95 percentile for the pollutant concentration and an allowable concentration for each pollutant. According to this ranking, the order of the four metals in seawater is: Pb, Cu, Cr, Zn. The respective ranking in sediments gives: Cu, Zn, Pb, Cr. These results indicate that if the priority is on improving water quality, the focus should be on lead. If, on the other hand, the two hazard indices are considered jointly, then copper becomes the highest-ranking metal, while lead is second. © 2007 Elsevier B.V. All rights reserved.	en
heal.publisher	ELSEVIER SCIENCE BV	en
heal.journalName	Desalination	en
dc.identifier.doi	10.1016/j.desal.2006.05.034	en
dc.identifier.isi	ISI:000247159700009	en
dc.identifier.volume	210	en
dc.identifier.issue	1-3	en
dc.identifier.spage	69	en
dc.identifier.epage	82	en