[n° ou bulletin] 

Titre :	Volume 86,Volume 86, Issues 1–2 - Assessment of contamination, distribution and chemical speciation of trace metals in water column in the Dakar coast and the Saint Louis estuary from Senegal, West Africa
Type de document :	document électronique
Auteurs :	Mamadou diop, Auteur ; Michael Howsam, Auteur ; Cheikh Diop, Auteur
Année de publication :	2014
Importance :	pp. 339–343
Présentation :	ill.
Langues :	Anglais (eng)
Catégories :	Environnement
Mots-clés :	Elements  Pollution  Bioaccumulation  Marine organisms  Senegal
Résumé :	Concentrations of 11 elements were quantified in five marine species from different trophic levels of a food web (algae, mussel, shrimp and fish), representative for shallow Senegalese coastal waters, and including species of commercial importance. Significant differences in element concentrations and bioaccumulation were demonstrated, revealing the utility of employing a suite of organisms as bioindicators to monitor metal contamination in coastal areas. There was no clear seasonal pattern in concentration of elements, however inter-site differences were observed. Calculations of transfer factors for all the studied elements showed that transfer factors from water were greater than those from sediments. For shrimp and mussel, the concentrations of Pb and Cd were below the EU's maximum level for human consumption, however high concentrations of arsenic in shrimp were recorded at all sites.
En ligne :	http://ac.els-cdn.com/S0025326X15302423/1-s2.0-S0025326X15302423-main.pdf?_tid=a [...]
Permalink :	http://www.biblio.uadb.edu.sn/pmb/opac_css/index.php?lvl=bulletin_display&id=197

[n° ou bulletin]  Volume 86,Volume 86, Issues 1–2 - Assessment of contamination, distribution and chemical speciation of trace metals in water column in the Dakar coast and the Saint Louis estuary from Senegal, West Africa [document électronique] / Mamadou diop, Auteur ; Michael Howsam, Auteur ; Cheikh Diop, Auteur . - 2014 . - pp. 339–343 : ill.
Langues : Anglais (eng)

Catégories :	Environnement
Mots-clés :	Elements  Pollution  Bioaccumulation  Marine organisms  Senegal
Résumé :	Concentrations of 11 elements were quantified in five marine species from different trophic levels of a food web (algae, mussel, shrimp and fish), representative for shallow Senegalese coastal waters, and including species of commercial importance. Significant differences in element concentrations and bioaccumulation were demonstrated, revealing the utility of employing a suite of organisms as bioindicators to monitor metal contamination in coastal areas. There was no clear seasonal pattern in concentration of elements, however inter-site differences were observed. Calculations of transfer factors for all the studied elements showed that transfer factors from water were greater than those from sediments. For shrimp and mussel, the concentrations of Pb and Cd were below the EU's maximum level for human consumption, however high concentrations of arsenic in shrimp were recorded at all sites.
En ligne :	http://ac.els-cdn.com/S0025326X15302423/1-s2.0-S0025326X15302423-main.pdf?_tid=a [...]
Permalink :	http://www.biblio.uadb.edu.sn/pmb/opac_css/index.php?lvl=bulletin_display&id=197