1. “Al.I. Cuza” University of Iasi, Faculty of Chemistry, 11 Carol I Bd, Iasi 700506, Romania
2. “Gh. Asachi” Technical University of Iasi, Faculty of Chemical Engineering and Environmental Protection, Bd. D. Mangeron, Iasi 700554, Romania
3. “Al.I.Cuza” University of Iasi, Faculty of Geography and Geology, 20 A Carol I Bd., Iasi 700505, Romania