Department of Laboratory Techniques;
Institut Supérieur de Technologie;
Mamou;
Republic of Guinea;
Laboratory of Analytical Chemistry;
Faculty of Sciences;
Gamal Abdel Nasser University of Conakry;
Conakry;
Republic of Guinea;
Laboratory of the Office National de Contrô
le de Qualité de Matoto;
Conakry;
Republic of Guinea;