Dr. Sana El Fadeli, PhD - Faculty of Sciences Semlalia, Cadi Ayyad University

Dr. Sana El Fadeli

PhD

Faculty of Sciences Semlalia, Cadi Ayyad University

Marrakech | Morocco

Main Specialties: Epidemiology

Additional Specialties: Ecotoxicology and Epidemiology

Dr. Sana El Fadeli, PhD - Faculty of Sciences Semlalia, Cadi Ayyad University

Dr. Sana El Fadeli

PhD

Introduction

Primary Affiliation: Faculty of Sciences Semlalia, Cadi Ayyad University - Marrakech , Morocco

Specialties:

Additional Specialties:


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Publications

6Publications

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3PubMed Central Citations

Effects of Imbalance in Trace Element on Thyroid Gland from Moroccan Children.

Biol Trace Elem Res 2016 Apr 29;170(2):288-93. Epub 2015 Aug 29.

Laboratory of Hydrobiology, Ecotoxicology and Sanitation, Bd Moulay Abdellah BP, 2390-40001, Marrakech, Morocco.

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http://dx.doi.org/10.1007/s12011-015-0485-2DOI Listing
April 2016
10 Reads
1 Citation
1.750 Impact Factor

Assessment of heavy metals contamination in soils around a mining site in Marrakech region, Morocco

MJC.3 (4)741- 747.

Moroccan journal of chemistry

Mining sites are a permanent toxicological problem for the surrounding ecosystems and human health. In the present study we investigate the accumulation of heavy metals in agricultural soils collected from the surrounding area of a mining site of Marrakech (Morocco). The occurrence of heavy metals in field soils was, in a decreasing order, Zn > Cu > Pb and Cd. Concentrations of the heavy metals were higher in the studied soils compared to the control soil. Based on the geoaccumulation index (GeoI) and the contamination factor (CF), the contamination degree can be defined as slightly contaminated for Pb and Zn, highly contaminated for Cd and moderately contaminated for Cu. With respect to the pollution load index (PLI) the metal levels exceed local and regional background concentrations indicating contamination sufficiently high to attract attention and to pose risk to the ecosystem. Heavy metals are persistent in the environment and are subject to bioaccumulation in food chains and therefore pose substantial health risks for human and animal. Keywords: Agricultural soils, Mining sites, Heavy metals, Contamination degree.

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November 2015
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Study of potential environmental risk of trace metallic elements in mine tailings: Case of Draa Lasfar functional mine in Marrakech - Morocco

AJAR. Vol. 10(33), pp. 3246-3252

African Journal of Agricultural Research

Mining activity is one of the most important sources of heavy metals in the environment. In Marrakech region, functioning or abandoned mines represent a great hazard due to huge amounts of waste deposited in waste dumps and tailings often with high concentration of heavy metals pollution. In this study, the chemical forms of four heavy metals in mine tailings of Draa Lasfar in north-west of Marrakech city (Morocco) were studied by determining of four metals (Cd, Cu, Pb, and Zn) using standard solvent extraction and atomic absorption spectrophotometric techniques. The chemical pools of the metals indicated that the metals were distributed into six fractions with most of the metals residing in the non-residual fractions, suggesting how readily the metals are released into the environment. Results showed Cd and Cu were predominantly associated with short-term mobile fraction (F1 and F2) while Pb was largely associated with long-term mobile fraction (F3, F4 and F5) and Zn was essentially bound to Fe–Mn oxide phase (F4). Key words: Heavy metal contamination, mining activity, sequential extraction, mine tailings, Marrakech –Morocco.

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August 2015
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CHARACTERIZATION OF FIVE HEAVY METAL FRACTIONS IN AGRICULTURAL SOILS AROUND THE MINE AREA OF DRAA LASFAR, MARRAKECH-MORROCO

AJST. Vol. 6, Issue 07, pp. 1588-1594

Asian Journal of Science and Technology

It is well known that, heavy metals have affinity for different compartment in soil. The risk associated with the presence of metals in soil is their potential ecotoxicity and ability to enter the food chain. Total metal content of a soil is inadequate for predicting the toxicity of heavy metals in soil. Hence, sequential extraction was used in this study to fractionate five heavy metals (Al, Cd, Cu, Pb and Zn) in soils collected from a mining area in order to determine the fraction of the total metal content that is bioavailable. Results showed that aluminium, lead and zinc were mostly associated with long-term mobile fraction (F3, F4 and F5), cadmium was mostly associated with the exchangeable fraction (F1) while copper was widely abundant in the oxidized form (F4). The apparent mobility and bioavailability for these five heavy metals in the studied soils were in the order: Cd>Zn>Pb>Cu>Al. This implies that cadmium has the highest mobility in the studied soils. Key words: Heavy metal speciation, Contamination, Active mine, Sequential extraction, Soils and tailings, Marrakech – Morocco.

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July 2015
3 Reads

Caractérisation de la qualité physico-chimique et minéralogique de l’eau de consommation de quatre zones de la ville de Marrakech-Maroc

J. Mater. Environ. Sci. 6 (9) 2437-2445

Journal of Materials and Environmental Science

L’étude porte sur l’analyse des paramètres physico-chimiques et minéralogiques (le pH, la Conductivité, l’oxydabilité, la dureté, les chlorures, l’ammonium, les nitrates, les nitrites, les sulfates, les orthophosphates, le sodium, le potassium, le calcium et le plomb) afin d’établir un diagnostic de l’état de la pollution des eaux de consommation. Ainsi, des prélèvements d’eau ont été effectués au niveau de quatre zones d’étude (z. Médina, z. Mrabtine, z. Azzouzia, z. Chouiter) qui ont été suivies pendant tout un cycle annuel en période humide aussi bien qu’en période sèche (durant quatre campagnes). Pour un total de 320 prélèvements, le dosage des paramètres physico-chimiques et minéralogiques a été réalisé selon les normes en vigueurs pour trois types d’eaux de consommation à savoir : l’eau des réseaux traitées, l’eau des puits traitées et l’eau des puits non traitées. L’application de l’Analyse en Composantes Principales (ACP) sur les résultats nous a donné deux variétés d’eau : une variété caractérisée par une augmentation des teneurs en conductivité, en dureté et en ammonium pour la zone Azzouzia et une augmentation des teneurs en chlorures, en dureté, en ammonium et en nitrites pour la zone Mrabtine et une variété d’eau dont les teneurs sont conformes aux normes nationales et internationales de l’OMS pour la zone Médina et la zone Chouiter. Les actions anthropiques humaines (rejets d’eau usée, activités agricoles et industrielles) sont la cause principale de cette pollution des eaux de consommation au niveau de la zone Mrabtine et la zone Azzouzia. Mots-clés : eaux de consommation, la pollution, qualité de l’eau, Marrakech

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July 2015
4 Reads