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Paramètres influençant la distribution des éléments traces métalliques dans les affluents du fleuve Garonne (France)

N'Guessan, Yao Mathieu and Wognin, Valérie Ama and Kouadio, Kouamé Georges and Probst, Anne and Probst, Jean-Luc Paramètres influençant la distribution des éléments traces métalliques dans les affluents du fleuve Garonne (France). (2017) International Journal of Biological and Chemical Sciences (IJBCS), 11 (3). 1361-1372. ISSN 1991-8631

(Document in French)

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Official URL: https://dx.doi.org/10.4314/ijbcs.v11i3.3 5


The left-bank tributaries of the Garonne River, located in the South-West of France, cross catchments, is affected by significant agricultural activities. To evaluate the quality of the dissolved fraction, seventy-five(75) samples of river waters were collected. Several trace elements were analyzed in this aqueous phase. The average metal trace element concentrations, in this region, are in the decreasing order: Zn (4.46 μg.l-1), As (1.03 μg.l-1), Cu (0.79 μg.l-1) Ni (0.62 μg.l-1), Cr (0.30 μg.l-1), Co (0.23 μg.l-1), Pb (0.04 μg.l-1), and Cd (0.01 μg.l-1). These values are, for the majority, lower than those of waters of rivers in non-anthropized areas. The distribution of these elements is controlled by chloride and organic matter, particularly in the areas where the anthropogenic inputs of these compounds are significant. In less anthropized areas, the availability of these trace elements in the water column decreases when the pH and the alkalinity increase according to natural geochemical processes. These observations show the predominant action of anthropogenic activities on the mobility and the biological availability of metallic pollutants in the tributaries of the Garonne River.

Item Type:Article
Additional Information:Thanks to International Formulae Group. The definitive version is available at https://www.ajol.info/index.php/ijbcs/article/view/161914. The original PDF of the article can be found at : https://www.ajol.info/index.php/ijbcs/article/view/161914/151452
HAL Id:hal-01630758
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Other partners > Ecole Normale Supérieure d'Abidjan - ENS Abidjan (IVORY COAST)
Other partners > Université Félix Houphouët-Boigny - UFHB (IVORY COAST)
Laboratory name:
Laboratoires d’Ecologie Fonctionnelle (ECOLAB) - Laboratoire des Mécanismes et des Transferts en Géologie (LMTG) - G. Durbe - A. Alric
Deposited On:08 Nov 2017 09:34

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