Laboratory of Establishment of Autonomous Control and Coordination of Export

Agadir, Morocco

Laboratory of Establishment of Autonomous Control and Coordination of Export

Agadir, Morocco
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Agnaou M.,University Ibn Zohr | Nadir M.,University Ibn Zohr | Ait Alla A.,University Ibn Zohr | Bazzi L.,Laboratory of Establishment of Autonomous Control and Coordination of Export | And 2 more authors.
Journal of Materials and Environmental Science | Year: 2017

Extensive pesticide usage in modern agriculture in Souss Massa region (south of Morocco ) represents a considerable anthropogenic stressor to the coastal ecosystems and particularly estuarine ecosystems at risk from the effects of these contaminants. In order to assess the organochlorine pesticides (OCPs) contamination in Oued Massa estuary, surface sediment sample are collected seasonally between winter 2009 and autumn 2010. The concentrations of organochlorine pesticides (OCPs) in sediment, were analyzed by gas chromatography using electron capture detector (GC/ECD). Five OCPs residues are detected in the ecosystem: Endosulfan, bifentrin, deltamethrin, aldrin and lindane. The total OCPs concentrations ranged from 57.39 to 281 ng g1 dw. Endosulfan and lindane were abundant in the estuarine sediment. The concentrations of OCPs in sediment collected in winter 2009 (281 ng g-1dw) were higher than those in other seasons. The results obtained in this study show a presence of the pesticides residues during all sampling season. This contamination could be related to the most intense use of this product in Souss Massa region. Therefore, continued monitoring of pesticides in this area is needed to determine the potential risks and ensure the health of the aquatic organisms within the Oued Massa estuary throughout the year. © 2017, University of Mohammed 1er.


Afia L.,University Ibn Zohr | Salghi R.,University Ibn Zohr | Bammou L.,University Ibn Zohr | Bazzi Lh.,Laboratory of Establishment of Autonomous Control and Coordination of Export | And 2 more authors.
Acta Metallurgica Sinica (English Letters) | Year: 2012

The effect of Argan plant extract (APE) on the corrosion of the steel in hydrochloric acid medium was studied using gravimetric, electrochemical polarization and impedance spectroscopy (EIS) measurements. Inhibition eficiency increases with APE concentration to attain 95% at 2.5 g/L. We note good agreement between gravimetric and electrochemical methods (potentiodynamic polarization and EIS). Effect of temperature is also made in the 298-328 K range. Polarization measurements show also that APE act as a mixed inhibitor. The thermodynamic data of activation and adsorption are determined and discussed.


Rekkab S.,University of Mentouri Constantine | Zarrok H.,Université Ibn Tofail | Salghi R.,University Ibn Zohr | Zarrouk A.,University Mohammed Premier | And 5 more authors.
Journal of Materials and Environmental Science | Year: 2012

The inhibition of the corrosion of C38 steel in sulfuric acid solution by the essential oil of Eucalyptus globulus (Myrtaceae) has been studied using weight loss, electrochemical impedance spectroscopy and potentiodynamic polarization techniques. Inhibition was found to increase with increasing concentration of the essential oil. The effect of temperature on the corrosion behavior of C38 steel in 0.5M H2SO4 with addition of essential oil was also studied. The adsorption of the essential oil on the C38 steel surface obeyed the Langmuir adsorption isotherm. Values of inhibition efficiency calculated from weight loss, potentiodynamic polarization, and electrochemical impedance spectroscopy are in good agreement. Polarization curves showed that Eucalyptus globulus (Myrtaceae) essential oil behaves as a mixed-type inhibitor in sulfuric acid. The activation energy as well as other thermodynamic parameters for the inhibition process was calculated and discussed. The results obtained showed that the essential oil of Eucalyptus globulus (Myrtaceae) could serve as an effective inhibitor of the corrosion of C38 steel in sulfuric acid solution.


Bazzi L.,Laboratory of Establishment of Autonomous Control and Coordination of Export | Errami M.,University Ibn Zohr | Salghi R.,University Ibn Zohr | Hormatallah A.,Institute Agronomique et Veterinaire Hassan II | And 3 more authors.
Journal of Materials and Environmental Science | Year: 2013

35 samples of peaches and nectarines collected in the area of Souss Massa Valley (Morocco) were analyzed. The detected residue levels ranged from to 0.3 mg kg-1 for carbendazime, from 0,006 to 0,210 mg kg-1 for cyhalothrine, from 0.005 to 0.18 mg kg-1 for bifenthrine, from 0.065 to 0.450 mg kg-1 for iprodione, and from 0.21 to 1.040 mg kg-1 for fludioxonil. European MRL for cyhalothrine in nectarines set in 0.200 mg kg-1, was exceeded in 5 samples, and MRL for carbendazime set in 0.200 mg kg-1 for nectarines was exceeded in 10 samples.

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