1. Athens Water and Sewerage Company S.A. (E.Y.D.A.P.)-Research and Development, Oropou 156, 11146 Athens, Greece
2. Institute of Marine Biological Resources and Inland Waters (IMBRIW), Hellenic Centre for Marine Research (HCMR), 46.7 km Athens-Sounio Ave., 19013 Anavyssos, Greece
3. Laboratory of Environmental Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, 15784 Athens, Greece