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S Touaylia
S Ghannem
H Toumi
M Bejaoui
J Garrido

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S Touaylia
S Ghannem
H Toumi
M Bejaoui
J Garrido

International Research Journal of Public and Environmental Health
Vol.3 (9),pp. 209-217, September 2016
ISSN 2360-8803
Available online at https://www.journalissues.org/IRJPEH/
DOI:http://dx.doi.org/10.15739/irjpeh.16.027
Article 16/ID/JPRH059/ 09 pages
Author(s) agree that this article remain permanently open access under the terms of the Creative Commons Attribution License 4.0 International License.



Original Research Article

Assessment of heavy metals status in northern Tunisia using contamination indices: Case of the Ichkeul steams system

Samir Touaylia*1, Samir Ghannem1, Hela Toumi1, Mustapha Bejaoui1 and Josefina Garrido2

1Laboratoire de Biosurveillance de l’Environnement, Département des Sciences de la Vie, Faculté des Sciences de Bizerte, Université de Carthage, Zarzouna 7021, Bizerte, Tunisie.
2Departamento de Ecología y Biología Animal, Facultad de Biología, Universidad de Vigo, España.

*Corresponding Author E-mail: toysam2010(at)yahoo.fr



date Received: July 2, 2016     date Accepted: August 24, 2016     date Published: September 26, 2016


 Abstract

The risk of heavy metals is major environmental problem. The levels of heavy metals enrichments in the sediments sampled from the Ichkeul wetland streams system were determined using contamination indices: the contamination factor (CF), geo-accumulation index (Igeo), and pollution load index (PLI). The obtained data for the geo-accumulation index revealed that sampled sediments are unpolluted for Fe, Zn, Mn, Ni, Cu, and Cr, while the levels of Cd and Pb indicated a moderate to heavy contamination. A similar profile was given by the data of the contamination factor. The pollution load index showed low values in all studied samples, ranging between 0.45 and 1.35. The non-metric multidimensional scaling (NMDS) analysis highlighted three main groups suggesting that they derived from same sources.


Key words: Streams, wetland, heavy metals, contamination indexes


Touaylia et al