1. Chemistry Department, University of Bari, via Orabona, 4, 70126 Bari, Italy
2. Aerospace Sciences and Engineering (Inter-University Ph.D.) Polytechnic of Bari and University of Bari Aldo Moro, Via Orabona 4, 70126 Bari, Italy
3. CNR-ICCOM, SS Bari, via Orabona 4, 70126 Bari, Italy
4. Dipartimento di Scienze della Terra e Geoambientali, Università degli Studi di Bari Aldo Moro, Via Edoardo Orabona 4, 70125 Bari, Italy