1. "Gheorghe Asachi" Technical University of Iasi, Faculty of Chemical Engineering and Environmental Protection, Department of Environmental Engineering & Management, 71 Mangeron Blvd., 700050 Iasi, Romania
2. "Al.I.Cuza" University of Iasi, Faculty of Geography and Geology, Department of Geology and Geochemistry, Carol I Blvd. 20 A, 700506, Iasi, Romania