1. Faculty of Chemical Engineering and Environmental Protection, Department of Environmental Engineering and Management, Technical University “Gheorghe Asachi” of Iasi, D. Mangeron 71A, 700050 Iasi, Romania, Tel./Fax:
2. Faculty of Geography, Department of Geology and Geochemistry, “Al. I. Cuza” University of Iasi, Carol I, 20A, 700506 Iasi, Romania
3. Collective of Geography, Romanian Academy, Branch of Iasi, Carol I Street, No. 18A, 700506 Iasi, Romania
4. “P. Poni” Institute of Macromolecular Chemistry, Romanian Academy, Aleea Grigore Ghica Vodă 41A, 700487 Iasi, Romania
5. Faculty of Chemical Engineering and Environmental Protection, Department of Chemical Engineering, Technical University “Gheorghe Asachi” of Iasi, D. Mangeron 71A, 700050 Iasi, Romania
6. Faculty of Geography and Geology, Department of Geography, “Al. I. Cuza” University of Iasi, Carol I, 20A, 700506 Iasi, Romania