1. Laboratory of Analytical Chemistry and Food Control, Faculty of de Medicine, Pharmacy and Odontology, Cheikh Anta DIOP University, BP 5005, Dakar, Senegal
2. Common Center of Measurements, Littoral Côte d’Opale University, BP 59140, Dunkerque, France
3. Unit of Environmental Chemistry and Interactions with Life, Littoral Côte d’Opale University, BP 59140, Dunkerque, France