1. Department
of Environmental Engineering and Antipollution Control, Technological Educational Institute of Western Macedonia (TEI), Kila 50 100 Kozani, Greece
2. Ioffe Institute, 26 Politekhnicheskaya
ul., 194021 St.
Petersburg, Russia
3. Dipartimento
di Scienze Chimiche e Geologiche, Università di Cagliari, Via San
Giorgio 12/2, 09124 Cagliari, Italy
4. Division
of Physical Chemistry, Department of Materials and Environmental Chemistry,
Arrhenius Laboratory, Stockholm University, 106 91 Stockholm, Sweden